P1391 code jeep. The next day, it was no longer raining and Jeep ran fine.

P1391 code jeep 1999 wj p1391 code. New engine codes after spark plug changes (P1391, P0352, P0340) Thread starter Schwifty Rich; Start date Feb 24, 2021; Schwifty Rich TJ Enthusiast. Jeep Grand Cherokee WJ with a CEL. The iridium plugs didn’t work in my 01 and caused several random misfires as soon as I put them in. So far have replaced the cam and crank sensor as well as the Q&A: 1996 JEEP CHEROKEE CRANKSHAFT POSITION SENSOR - P1391 CODE By chatting and providing personal info, you Customer: I have a 1996 Jeep Cherokee 4. Trouble code came back as P1391, Intermittient CKP/CMP signal loss. Because its only $15 bucks at auto parts store do this first. I'm planning on changing both sensors tomorrow, I been reading about this all Our 2003 Liberty recently died on the highway. 0 liter xj with codes p1391 and p0320 had installed a new crank sensor and has a new. Go. Today on the way home from work the CEL came on again. Over the last two weeks I've went craZy ripped the motor all apart and replaced all kinds of stuff. 2007 JEEP GRAND CHEROKEE. The P1391 code for Honda vehicles indicates a G-Sensor Performance Problem. answered Nov 9, 2018 by Carguy1 (13. The cost of repairing a P1391 Chrysler code can vary depending on the specific cause of the issue. Para solucionarlo, se recomienda realizar las siguientes acciones: 1. P1391: Intermittent Loss of CMP or CKP I have a 2000 jeep grand cherokee 4. drive jeep mil on at about 15 mph. 9k views. I have 1997 jeep cherokee 4. Time to dig deeper. I recently replaced CKP and CMP now throwing a code P1391 Intermittent Loss on CKP / CMP Code P0300 Jeep Description. I started Jeep Wrangler TJ Forum to serve as a resource for TJ I have had the same engine code on my 97 2. Easy replacement was to replace the simple crank sensor. I got P0340 and P1391 codes. but im also getting code P1391 or Intermittent loss of CMP or CKP --- both trucks when running did not have the code before transplant. This code often is associated with a bad Crankshaft Position Sensor, which is a common problem in cherokees. I have been chasing down a misfire code on the Jeep for what seems like close to two years now. I’ve made The P1391 code indicates that the crank or cam sensor(s) have sent an intermitant code to the ecm. 0 TJ and I already replaced the crankshaft position sensor around 2 weeks ago with a brand new NTK one designated for manual transmission. codes P1391 and P1495. Save Share. Picked up a 2001 grand cherokee thinking it was a good deal. 7 engine has a p0340 and p1391 codes. This tell you all the items that can cause P1391. 0L P1391, potentially with p0351, p0352, p0353 Testing the Throttle Position Sensor and Coolant Temperature Sensor is also a good idea. Mike Patterson; Aug 26, 2024; TJ General Discussion; Replies 18 Views 549. It also stalls. especially since you have cam code. rm2001wj. A P1391 is related to and may be accompanied by the following codes: P0700 – Transmission Control System Malfunction. 2002 liberty 3. In conclusion, the P1391 code is a diagnostic trouble code that refers to a problem with the transmission slipping. 2002 Jeep TJ with codes P0340, P0353, P0352, P0351, and P1391. The Diagnostic P1391 CHRYSLER - Intermittent Loss of CMP or CKPUsually paired with a check engine light on. 7 liter v-8 engine. I do not feel a misfire and there is no rough idle. 7L (N) 4-spd (42RE) — 1J4GW58N61⦁⦁⦁⦁⦁⦁⦁ Apparently the cam timing was physically out of time, I wonder if you would have continued to have gotten the P1391 code with the 2003 jeep with 4. 7L Stroker That I keep getting a P1391 Trouble code. 2003 Jeep Liberty; Open Questions: 0 answers. Faulty Crankshaft Position Sensor (CKP) Crankshaft Position Sensor (CKP) wire harness is open or shorted; Often replacing the faulty sensor fixes the P1391 code, but not necessarily. New posts Unanswered threads Image search. 7 liter getting codes of p0340 and p1391. Amedee. P1391 JEEP Possible Causes . Did remove the engine grounds, cleaned and reconnected, nothing close to bad. Shop. It has been raining for days here and every time I took it out and found it still wasnt This time I am diagnosing a 2004 Jeep Grand Cherokee with a Cam/Crank code with misfires and hard start. I have a 2004 jeep grand cherokee overland with the 4. Come join the discussion about performance, engine swaps, modifications, classifieds, troubleshooting, maintenance, and more! You can find common Jeep Grand Cherokee fault codes on this page that when clicked take you to a detailed description. Mechanic's Assistant chat. replace speed sensor on trans output shaft clear code. check codes p1391 , p0720 ?? new code P1391 "Interm Loss Of CMP or CKP" i know it is cam and crank sensors. Code P1391 Chevrolet Description. I could clear that one out but it would come back after driving for about 10-20 minutes. So far have replaced the cam and crank sensor as well as the 1997 jeep: engine cuts. Supporting Member. com offers the best deals on used Jeep parts available anywhere online, easy to order, shipped to you or pick up in store. L flat code P1391 jeep started stalling out (not driver error, I am proficient with a manual trans) Hi, I have a 96 jeep Cherokee 4. 0 showing trouble codes: P0302, P1391, P0353, P0352, P0351. I'm having some odd symptoms and Ive figured out how to "correct" the symptoms but not the code. shaft. Be sure to read the linked info. Scantool seems to be the most accurate based on looking at all the readings coming from the engine. El código P1391 en un Jeep Grand Cherokee indica un problema en el sistema de encendido o en el sensor de posición del cigüeñal. After about a week, I finally got a CEL. Loss of the Cam Position Sensor or Crank Position Sensor signal has occurred. I brok off screws in old one Mechanic's Assistant: Can you confirm the year and model of your Dodge? Customer: 2001 dodge ram 2500 5. The engine light came on several weeks ago and the first code (P0340) appeared. When the PCM P0353(M) Ignition Coil # 3 Primary Circuit Peak primary circuit current not achieved with maximum dwell time. I have had very few issues with it, but on Friday I got a check engine light and I drove it for about 45min on Friday and then half an hour to work and half an hour back Customer: i replaced distributor and now have p1391 code. I'm leaning towards crank position sensor, cam position sensor issues. Sort by Oldest first Oldest first Newest first Most reactions. 7 Rebuilt Long Block with Millings lifters and secured Valve Seats, Stock Suspension, Trimmed Fenders front and rear, Black Bear JK rims (Sailun) 245/75/17, Rebuilt 30/44A, 242HD. P1391. Conclusion. Ask a Question. This time is was really running bad. Though it wouldnt hurt to clean out your IAC and throttle body it sounds like too. Sort of figure if the jeep is running, I can eliminate CKP for being a culprit (IDK i might replace it anyway). I read the codes with a cheap-o OBDII reader and got P1391 and P0340. When it's started and revd up it starts missing? Answered by Ron in 2 mins 7 years ago. Rpm's were surging while in park and the engine was missing worse than before I changed out the sensors. Pulled a p1391 code and saw that it was either the Cam Position Sensor (CMP) or Crank Position Sensor (CKP). The shop replaced both crank and camshaft sensors. 037. I recently replaced CKP and CMP now throwing a code P1391 Intermittent Loss on CKP / CMP Hello and welcome to JustAnswer! P1391 sets when there is an erratic signal from the cam or crank sensor and the PCM isn't able to tell which. Last week it wouldn't start all The P1391 diagnostic trouble code (DTC) indicates that there is an intermittent issue with the CMP (Camshaft Position Sensor) or CKP (Crankshaft Position Sensor) signal. I am hoping the Jeep Forum community can help Here's my Jeep information: 1999 Jeep Wrangler TJ 2. Jeep and Jeep Wrangler are Customer: 2002 Jeep Wrangler TJ (6 cylinder) has code P1391, I replaced the Crank shaft position sensor (3 days before which fixed the random die outs while driving down the road. 2000 Jeep Wrangler 4. P0340 is a code that deals with the Crankshaft position sensor and and/or the Camshaft position sensor. P1391 JEEP - CMP or CKP Signal Intermittent Condition. 7L with code P1391 camshaft sensor location. This is video of my 99wj with a 4. These sensors are crucial components in the engine management system, as they provide vital information to the engine control module (ECM) about the position of the camshaft and crankshaft. One of the more common engine management trouble codes that can occur in the Jeep Wrangler is P0340. Had the typical Cylinder #1 Misfire (P0301) and Loss of Cam/Crank Signal (P1391) codes and my electrical system looked a proper mess. Usually answered in minutes! Expand. Camshaft or Crankshaft Position sensor. I am having issues, While driving, the jeep is stuttering and completly stalling with red lights/stop signs. do anyone know the resistance on these sensors so i can test them? i had trouble with grounding on my jeep and i fixed a couple wires i just wants to make sure it is not wires before i go buying sensors. which it had started idling around two when it happened. The jeep always starts right back up with no hesitation. The airbag keeps dinging, what could it be? new distributor and now code p1391 Jump to Latest 3. P1391 - Intermittent Loss of CMP or CKP Signal. Wisconsin certified emissions state inspector. Mode01 Posts: 93 Joined: Thu 2004 Jeep Grand Cherokee 4. Shortly after that, it failed to start one time and I had the spark plugs, air cleaner and PCV valve replaced. 5 5sp TJ ever since I got a reman engine in. Come join the discussion about performance, engine swaps, modifications, classifieds, troubleshooting, maintenance, and more! Show Less . It does this ONLY once fully warmed up (driven about 15 miles or so. 0 out of my 98 for a 97 in better shape and installed a low mile 98 transmission, aw4. P1740 – Torque Converter Clutch Malfunction. It is for either the Camshaft or the Crankshaft position sensors. Before I start switching them out, has If the housing wasn't synced correctly, then it will cause the P1391 code to set, so you have to be sure. But then came back 24 hours later. 5L except when I'm give'n the jeep gas I have a The next morning, the Jeep started perfectly. '06 Jeep Wrangler, 65th Edition, stock. I thought maybe it needed a tune up, so replaced the plugs, wires, cap, and button. Amazon Store T-Shirts Stickers. P0340 is related to the camshaft position sensor and points to an issue with the wiring harness connected. ASE certified Technician advanced level specialist. pickup,cap,plugs,rotor,wires,ecm,it all has I have a 2004 Jeep Wrangler Sport RHD mail jeep that is in a no start condition (suddenly cut off) and has a trouble code of P1391. 1999 Jeep Grand Cherokee V8 4. I have replaced: camshaft position sensor, crankshaft position sensor, spark plugs, gas cap, and ECM (computer). ?? drive back home , engine missing . I read all about cheap Chinese sensors so I ordered a replacement under warranty through rock auto for the crank sensor. pickup,cap,plugs,rotor,wires,ecm,it all has had no affect,also the tach jumps when running rough Hello i have a Jeep grand cherokee 2000 4. sprinkles08. misfire. I have replaced the Crank Position Sensor, Re Indexed the Distributor same results. I have replaced crank sensor,dist. P1391 - Possible symptoms: (1) random misfire/stumble/stalling, often over bumps or right turns and when going into reverse. The only fault code was P1391 with no misfire codes and no P0320. my jeep spits and sputters and barely stays running. This means that multiple cylinders within the engine are not firing properly, leading to a lack of power, rough idling, and potential engine damage if left unresolved. 52,040 Satisfied Customers. '98 Jeep Wrangler, stock. After reading the check engine code OBDII Code P1391 which is a defective cps/cks. the jeep has always ran and started great. 0 code p1391 engine cuts out runs rough. the ecm and still have code problems Mechanic's Assistant: Jeep Cherokee: had rough driving jeep issues codes p0113/p0118/p0740. Jeep still misses a little while at idle, which is what my 2001 Jeep GC 4. Have a 1999 Jeep Cherokee Classic with a in line 6 cylinder 4. Read full answer. This time I got codes P0340 and P1391. code was only p1391 today torwards the end of my drive in started acting up again pulled over and got the codes now showing p1391 and p0352 any ideas where to start? Codes before cam sensor timing P1391 P0352 P0353, P0135, P0141, P0161 whatever. I have read a lot of threads here about P1391 codes. My questions: where to Jeep: Crankshaft position (CKP) sensor/camshaft position (CMP) sensor -intermittent signal : Mitsubishi: OBD II fault code P1391 is a manufacturer specific code that is defined by car makers Ford, Lincoln, I have 1997 jeep cherokee 4. Hello I have 1998 Jeep Cherokee Sport 4. We originall had only P0302 so we changed plugs, wires, coil, cam and crank sensors, and checked injectors. 6k points) Best answer. Cost to Fix P1391 Chrysler. It would run after replacement for about 1k miles, then die once warm. Codes read P1391 and P300s, all cylinders misfire. Jeep Wrangler JK Showcase. Their is noise and my check engine light comes on with the code p1391 coming from it. Went back to the autolite app985 dual platinums and several misfire codes cleared. Approximately 50 miles later, stumbling, stalling and P1391 code. I've tried several programs to read and reset the P1391 code. Customer: I have a 2000 Jeep Cherokee 4. But I still ge code P1391, when driving down the road the engine starts sputtering, pulled Soon after the check engine light came on and the code was P1391. The Engine starts up and runs fine just keeps setting this code and preventing me from getting an emissions test. com > p1391_jeep 'P1391 JEEP code description The Powertrain Control Module (PCM) monitors the Camshaft Position Sensor (CMP) Or Crankshaft Position Sensor. (2) shorted out the Fuel pump/ECU power wire. 0 aw4 4wd I recently swapped my 4. When the engine was replaced, my mechanic noted that my wiring harness was brittle and had more than a few "trail repairs". So, at least I know I am looking at the Cam sensor still. Current visitors Supporting Member Upgrade. So It ran great for a week, then i replaced the battery and a day later the check engine light came on. 1945-1986. it starts 9 times like it should and on the 10 time it starts only on 3 cylinders. it runs good then skips Mechanic's Assistant: Have you seen this code before with the same vehicle? Customer: no I had an engine lite be for changing distributor. Fired up ran fine but threw a p1391 code. Removed 2000 Jeep Cherokee 4. Produced from 1997-2006, many consider the Jeep Wrangler TJ to be the last true Wrangler Related codes. 0L that is throwing a P1391 code. Also, over the past few weeks, I've had an intermittent P1391 code (Intermittent Loss of CMP or CKP) that is probably related. and here i am thinking im am the only one throwing these codes lately except im throwing p1391 which is intermittent loss of CMP or CKP and P0352 which is an ignition coil circuit. My TJ is a '99 2. It's a generic code, which means it has the same definition for every car or truck made after 1996. 2018-2025. 1999 Jeep Cherokee P1391. 6 posts • Page 1 of 1. Without going thru a litany of trials, please know that Always buy top quality replacement parts and genuine Jeep engine sensors. Customer: Code P1391 Mechanic's Assistant: Just to clarify, what's the exact code? And have you tried to reset it? Customer: yes reset ECM new camshaft Mopar sensor new plug for same , new o2 sensors all 4 new plugs this started after daughter went off road in water jeep towed back to house . Jump to Latest A forum community dedicated to all jeep owners and enthusiasts. It that fair to Home JeepP1391 Jeep DTC P1391 Make: Jeep Code: P1391 Definition: CKP Or CMP Sensor Signal Intermittent Description: Engine started, engine running, and after every 69-degree I used a scanner tool and the P1391 code came up. After the install chrysler engine code p1391 popped up, Knowing the cha My 1999 Jeep Grand Cherokee is misfiring and OBDII scan shows fault code P1391. P1391 JEEP Possible Causes - Faulty Crankshaft Position Sensor (CKP) - Crankshaft Position Sensor (CKP) wire harness is open or shorted Anyway, after replacing O2 sensor 1 (bank 1 and bank 2) today, I now got the code P1391 for the crankshaft position sensor or camshaft position sensor. The car ran great for about 3 weeks until the P0340 code came back along with a hard start condition. When a Jeep triggers a P0300 code, it indicates that the engine's computer has detected a random cylinder misfire. The code cleared while I was working on the I fixed the P1391 check engine code by replacing camshaft position sensor. This is a quick simple job. 2007-2018. Jeep Codes; Trouble Code Fault Location Probable Cause; P0455: EVAP System Large Leak: P1000 – P1099 (Fuel and air metering and auxiliary emission control) P1391: Crankshaft position (CKP) sensor/camshaft position (CMP) sensor -intermittent signal: Wiring, poor connection, air gap, CKP sensor, CMP sensor: p0720 / p1391 codes; P0720 / p1391 codes. Maybe someone can shed some light or point me in a direction I may not be thinking of. Contact Us (401) 642-0236 Log in What engine? P0320 and P1391 are crank sensor codes. The most common cause for this is loose wiring or debris on the Life gets in the way sometimes and work on the Jeep slowed down for a while, but I am back at it. Will also shut off with a surge like motion when trying to stop. Possible causes: - Faulty Camshaft Position (CMP) Sensor - Faulty Crankshaft Position (CKP) Sensor I've had the P1391 code for almost 2 years now, replaced Cam and Crank sensor, new coil pack, checked all grounds, checked vacuum lines at manifold, and sacrificed a goat to try to clear OBDII Code P1391 I have 1996 Jeep Cherokee (Manufactured date date July 2006) which means that it has a lot of 1997 components including the cps. 0 engine and auto transmission, I am getting code P1391. The Jeep is been work on and the. Esto puede deberse a una conexión suelta, un sensor defectuoso o The P1391 code is a diagnostic trouble code stored in a Jeep vehicle’s engine control module (ECM) when there is an issue with the ignition system or camshaft positioning sensor. I'm planning on changing both sensors tomorrow, I been reading about this all Model Specific Jeep Discussions. Jerry. Possible causes - Faulty CamshaftPosition (CMP Throwing codes P0340 and P1391. 1997 Jeep TJ Diagnostic Codes; 1998-2006 Jeep TJ Diagnostic Codes; Gear Ratio To Tire Size Chart; Jeep TJ General Drivetrain Specifications; TJ Model Changes By Year; Recovery And Safety Tips Everyone Should Know; Mini Writeups . Shortly after that, it failed to 2000 tj auto last night jeep started to sputter and and gauges started bouncing everywhere. The procedures shown in this video apply So I just got a check engine code reading P1391. The CCD bus is a communication network that allows various modules within the vehicle to exchange data and commands. The most common cause for this is loose wiring or debris on the contacts of The P1391 code for Dodge vehicles indicates a CMP (Camshaft Position Sensor) or CKP (Crankshaft Position Sensor) signal intermittent condition. 3 posts Can anyone tell me why I'm getting a p1391 I just replaced the cam and crank sensors with OEM mopar parts I've also changed the pcm from previous idle problems can the timing cause this code thanks. Joined Apr 21, 2018 Produced from 1997-2006, many consider the Jeep Wrangler TJ to be the last true Wrangler. I had to replace it. The Jeep is surging basically. 5K views 16 replies 5 participants last post by merc07 Jan 14, 2015 P1391 Code. It has thrown a code P0340 a few times, which I looked up, and apparently typed wrong, because I thought that was an Evap issue. What is the Cost to Diagnose the Code? Labor: 1. Thread starter 97JadeTJ; Start date Oct 29, 2022; 97JadeTJ TJ Enthusiast. 7L, V8, 80,500 miles, all wheel drive. I have a 2001 Jeep Grand Cherokee 2WD with a 4. I'm have'n the same issue on my 97 TJ with a 2. 52,436 Satisfied Customers. no trouble. Before this it was throwing that code & P1698- PCM Fault No CCP. It's important to consult with a qualified I was having problems with a 2003 Jeep Liberty, miss-firing and generally have ignition timing issues. Verificar las conexiones eléctricas y cables relacionados con el sistema de encendido y el sensor de posición del cigüeñal. 0 cel code p1391, replaced cam and crank sensors bad misfire 2800 rpm and at idle. p1391; jeep; 0 like 0 dislike. Top. Browse Categories The P1391 code indicates that the crank or cam sensor(s) have sent an intermitant code to the ecm. The Jeep starts and runs normally now on both petrol and LPG and has had several engine start stop cycles since the problems occurred – perhaps a dozen or so and all without issue. I ordered both MOPAR sensors and replaced both. https: 2003 wrangler tj 4. I would replace it with a mopar brand. 7L P1391-INTERMITTENT LOSS OF CMP OR CKP i dont know what to do with the problem. 2017 Jeep Cherokee Trailhawk mirror replaced with new Kool Vue and the turn signal light on the mirror is constantly blinking and yes the turn signal is off. 0 dislike. An intermittent or failed signal from the Code P1391 Jeep Description. Thread starter Jeepinsin04; Start date May 22, 2023; 1; 2; Next. I have a 2002 Jeep Liberty Limited that started throwing these 2 codes: P0340 & P1391. Therefore it's important to check the following: Read this thread >> Jeep 4. I am geting a P1391 Intermittent Loss of CMP or CKP on my jeep liberty, 2002, preferrably id fix it myself. The Powertrain Control Module (PCM) monitors the Camshaft Position Sensor (CMP) Or Crankshaft Position Sensor (CKP) Signal. Jeep CJ Showcase This video was uploaded from an Android phone. 7 HO engine. My P1391 code came on. The cost of repairing the P0141 code for a Jeep can vary depending on the specific model, location, and labor rates. started up ran ok till I got home. Old coil packs in the back of jeep look fine also. I have replaced both sensors twice!! still same result. The P1698 code for Jeep vehicles indicates a fault in the Powertrain Control Module (PCM) due to a lack of communication with the Transmission Control Module (TCM) over the Chrysler Collision Detection (CCD) bus. One of the main culprits that result in this code is malfunctioning CKP or CMP sensors. I just saw someone else mention in going along with P1391 on their jeep. we ffirst got the p1391 code and changed both the cmp and ckp sensor and ended up with both codes. I'm not very familiar with Cam/Crank sensors so 2000 Jeep Grand Cherokee Laredo 4. My 02 X-model began to run rough after 165K miles and started throwing a P1391 OBDC code. P1281. The most common cause of this code would be a failed cam or crank sensor but if you've replaced them with Mopar then you can rule that out. Was having significant power loss on the way home. J. My Jeep has 236,000 miles. GAUGES GO CRAZY AND SOMETIMES VEHICLE WON'T START. Customer: I have 1997 jeep cherokee 4. Customer: I keep throwing a P1391 code I've replaced the crank sensor the cam sensor and housing. Is there any way to get a detailed code for the P1391, stating a problem with one or the other? I only got these codes from the on/off method. Like. ), then the Cam shaft position sensor (which the code appeared while missing during idle)was replaced today right before this new code appeared. It easier to remove from under the jeep. 0 hour of labor. Often replacing the faulty sensor fixes the P1391 code, but not necessarily. ) Approximately 50 miles later, stumbling, stalling and P1391 code. However these symthoms disappear when I let it sit over night, but after driving it once for 5, 10, 20, 40 minuits and turn it off However the check engine light has come on since then. 0 engine code P0 320 won’t start engine code P1391. Jeepinsin04 Member. Replaced the new one at top dead center compression stroke. It always starts on petrol before automatically switching to LPG – the changeover is undetectable. It's possible that the "manufacturer control" message you're seeing on your code reader could be a variation of the commonly recorded cam/crank sensor message. Replacing the crank sensor solved this issue. 7 4x4 i have a p1391 code reading replaced both sensors and still have the code come up immediately after starting i have take in to 2 different mechanics first couldnt figure it out second mechanic says he thinks its a stretched timing chain . As the day progressed, the Jeep would produce a CE light and a P1391 code each time the engine was cranked. 0 straight six you can find the crank sensor on the drivers side of the transmission where it blots up to the engine on the top side. Possible causes: - Faulty Camshaft Position (CMP) Sensor - Faulty Crankshaft Position (CKP) Sensor I've had the P1391 code for almost 2 years now, replaced Cam and Crank sensor, new coil pack, checked all grounds, checked vacuum lines at manifold, and sacrificed a goat to try to clear I am having issues, While driving, the jeep is stuttering and completly stalling with red lights/stop signs. What are the possible causes of OBDII code P1391 in a Jeep indicating a CMP or CKP signal intermittent condition? - Potential causes include faulty camshaft or crankshaft position sensors, damaged wiring or connectors, issues with the timing belt or timing chain, or a El código de falla P1391 en un Jeep significa que se ha detectado una señal irregular del sensor de posición del cigüeñal. Looks like its got quite a few problems, my main issue right now is that im getting p1391 and jerky loss of power at about 75 -80 mph when pushing it uphill and some misfires in cyl 7. It starts runs but will not idle you can drive it but dies at low idle. Members. Diagnose issues with your Jeep more efficiently by understanding the OBD2 codes specific to your model. Explore Our Forums. New copper plug Autolites, don't remember the number but crosses correct and gap all BTW . It would "hiccup" if you will about 3-5 times on an hour drive but wouldnt do it every time. Engine Is Cold Too Long Learn More. 0 cel code p1391, replaced cam and crank sensors bad misfire 2800 rpm and at The cost of repairing the P0141 code for a Jeep can vary depending on the specific model, location, and labor rates. I'm having issues with setting code P1391: It started out that the engine light code 1391 would come on if I drove 75 mph for over 5 minutes, and then downshifted to pass or climb a steep hill. It would shut down randomly and run rough sometimes. P1391 Definition: CMP or CKP signal intermittent A by-product of excessive condensation, this symptom is not exclusive to P1281 and can also mean a coolant leak or a glow plug problem (discussed in this article on code P1391). Faulty Crankshaft Position Sensor (CKP) The P1391 code should be the Cam Position sensor since the Crank sensor has already been replaced, and the delay start is either the injectors or Fuel pump. However, additional costs may apply if wiring repairs or ECM replacement is needed. Vehicle: 1999 Jeep Grand Cherokee V8 4. Our rough idle & stalling problems (P1391 error code) woes in the Sandbox (1999 Jeep Cherokee XJ) continued to haunt us even after deep cleaning the throttle p1391 code, misfires, PCM RPM signal lost, all due to a faulty wire harness on BOTH my jeep (female harness loose not grabbing male side of cam sensor pin), AND my cheap autozone cam sensor harness having a crimped male My jeep screwed up on me the other day right before a big trip. T. They keep changing. Stays on, also did. throwing $15 bucks at this even if not sure is worth it. Search Fixya. What 1999 jeep wrangler 4. It also threw a bunc read more You can find common Jeep Grand Cherokee fault codes on this page that when clicked take you to a detailed description. Besides, this code can also stem from the low input voltage, failed wiring, poor G-sensor, bad timing belt, or valve lifter. what can be the problem? - Did the code change from 700 to 720 ? or how did you obtain the 720 code? and what are those codes exactly, because my mechanic is saying that it is a fault in the transmission and he My jeep only liked the OE crank sensor. Codes: P0340 and P1391 Already done: Crankshaft Sensor replaced-new part Camshaft Sensor replaced-new part Engine wiring harness replaced-used part but before all of this happened I replaced the plugs in my jeep and I didn't gap them properly which ultimately messed up my spark and threw off my ecm's brain as far as fuel is concerned. Any Help will be greatly appreciated. I replaced the cps (OEM), thanks to this forum for the replacement instruction. the car will start, could one of the secondary timing chains - Jeep 2002 Liberty question Search Fixya Press enter to search. I went through 3 aftermarket ones. 9 on a 2003 jeep liberty sport 3. Vehicle is 2004 Jeep Grand Cherokee 4. This code indicates that there is a malfunction or fault in the circuit that controls the ignition coil for cylinder 3 in the engine. It ended up being a wire harness grounding out causing the jeep to stall just like yours. Now we have P1391 code fixed 97 wrangler A forum community dedicated to Jeep Wrangler owners and enthusiasts. I’ve covered the possible causes of the trouble code P1391 Dodge Ram 1500 with the complete guide on diagnosing and fixing it. use good lighting. Life gets in the way sometimes and work on the Jeep slowed down for a while, but I am back at it. Which, in short, if the computer doesnt get a reading from these two sensors it cuts the fuel delivery. Check engine light came on, tach went crazy, and the car shut off. 5 wrangler since I got it nearly a year ago. 0L 4WD, P1391 code after replacing CKP and CMP. is this the answer to a The diagnostic trouble code P0353 for Jeep vehicles specifically pertains to the ignition coil 3 circuit. The P1391 code typically refers to a problem with the camshaft or crankshaft position sensor. The code is loss of cam Crank signal. autocodes. I am at a loss of what to do next. I have a p 1391 code on a 1999 jeep grand cherokee 4. Backstory, my cam sensor went bad, but it pulls the same codes for cam/crank. A couple of weeks ago the distributor bearing went and I replaced the distributor. Joined Aug 14, 2020 Messages 826 Location Hot Springs, AR. 0L XJ. Idle is perfect. 1998 Jeep Grand Cherokee. I have changed the crankshaft position sensor, as well as the camshaft position sensor, but the code keeps coming back. A forum community dedicated to all jeep owners and enthusiasts. engine runs great if you accelerate Hey Started getting ****ty gas mileage 11-12 mpg and the check engine light came on. Jeep Gladiator JT Showcase. To diagnose the P1391 Chrysler code, it typically requires 1. P1391 Jeep - CMP or CKP Signal Intermittent Condition P1391 JEEP Possible Causes. Save Share Reply Quote Like. I bought another engine used and got it running but I was never able to get away from a P1391 engine code. fuel pump. Ive been researching the horror stories on this issue. 2003 Jeep Liberty check engine codes P1391 and p1698. 1999 jeep grand cherokee 4. In mechanical language, it means CKP signal intermittent condition. I checked cam and crank sensor signals with oscilloscope and found faul I've spent about 8 months (on and off) trying to get this 2000 TJ (86K miles) to run properly. 52,487 Satisfied Customers. 0 code p1391 keeps coming up on the jeep. Sponsors. Test the related engine sensors, and inspect the wire plugs and wire harnesses for damage or corrosion. 34 year working in the automotive field as a Tech. Helpful 0 ; So the other day I thought I felt a slight stumble and the CEL comes on but Jeep continues to run fine. I forgot what year of Jeep I got the engine from but it was distributor-less engine. I checked the codes P0174 system too lean bank 2 P1391 P0456 evap emission control system leak very small I’m wondering if replacing the camshaft sensor and crankshaft sensor would be a good start with the symptoms I have. The specific diagnosis time and labor rates at auto repair shops can vary based on factors such as I am geting a P1391 Intermittent Loss of CMP or CKP on my jeep liberty, 2002, preferrably id fix it myself. It progressed to multiple codes p0351, 0352 and 0354, the engine would go into a “limp home mode”- very little power but would stay 2001 Jeep Grand Cherokee Limited 4. Throws P1391 code. asked May 25, 2018 by meat1488 (102 points) jeep; grand-cherokee; p1391; 0 like 0 dislike. Join me and one of my students at RTC as we troubleshoot an intermittent no start problem on a Jeep Grand Cherokee. I have replaced crank sensor,dist Mechanic's Assistant chat Customer: 1997 jeep grand with 4. Nonetheless, it is an indicator to watch since it signifies your vehicle’s inability to reach normal operating temperatures during travel. So the other day I thought I felt a slight stumble and the CEL comes on but Jeep continues to run fine. After looking it up on the inerwebs I found it can be either caused by the crankshaft or cam shaft position sensors I was having problems with a 2003 Jeep Liberty, miss-firing and generally have ignition timing issues. Here is what I have done so far (STILL NOT RUNNING) Wasrunning great one day then check engine light went on and went downhillfrom there OBD2 Codes for Jeep Models. No scanner - might want to confirm CMP timing. I just installed a Camshaft position - Jeep 1999 Grand Cherokee question. 7L with code P1391. jeep-1998 cherokee sport 4. Jeep Wrangler JL Showcase. 035 and . Full Forum Listing. P0340 and P1391 codes-Need suggestions! Forum rules 2007 3:04 am. 5 4 Cylinder 5 Speed Manual On two occasions I've had the CHECK ENGINE light come on and a code P1391 (CMP/CKP Intermittent Signal Loss) was retrieved. 7 that has a p1391 code that I have replaced both of the cam and crank sensors and the problem is still there. I replaced the crankshaft pos. Some said timing chain, which I suspected was the case due to the jeep's high miles. When google p1391, it seems that this code is always tough to troubleshoot. I started Jeep Wrangler TJ Forum to serve as a resource for TJ owners Pulled the code when I got to the house - P1391 I cranked it up this morning, and it runs great. I looked in this forum to find the code pointing to two sensors, but several of you stated you had replced sensors and it wasn't helping. It originally threw the code p1391. I put in new plugs, coil rail, and crank sensor. That one is no longer coming up. The ignition coil is a crucial component in the ignition system of a vehicle, responsible for converting 96 jeep cherokee manual 4. *P1391-INTERMITTENT LOSS OF CMP OR CKP If your code is for the CPS, than theres your issue. Has started and run fine since then. runs rough. Jeep’s OBD2 system uses a combination of generic and manufacturer-specific codes to identify problems with your vehicle’s engine, transmission, and other systems. My cherokee died about a month ago. These sensors play a crucial role in the engine's operation by providing data to the engine control module (ECM) to determine the precise timing of the engine's ignition and 2001 Jeep Grand Cherokee Limited, 4. P1391 JEEP Code - CMP or CKP Signal Intermittent Condition https://www. if this is a 4. 1 answer 377 views. 7L jeep; grand-cherokee; p1391; 1 Answer. Chrysler/Dodge/Jeep Master Certified, ASE Master and Advanced Certified, Trans and Hybrid Specialist. 1 of 2 Go to page. Jeep was struggling to climb hills. I'm the original owner. Others (Digimoto) show obviously incorrect values for My 1999 Jeep Grand Cherokee is misfiring and OBDII scan shows fault code P1391. cleared the codes and went to drive it and it still seems to be misfiring as when I give it gas it spits and jerks me and sounds like it wants to stall out. 1997-2006. The problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM. Possible Causes of the DTC P1391 Jeep P1391 Code. pulled over shut it off and let it sit. first 600 miles of break in we had no problems then we did a oil and filter change. Hi there, Here is the location of the camshaft sensor. The P1391 Chevrolet diagnostic trouble code (DTC) specifically points to a problem with Wheel Speed Sensor 1 G-Sensor Circuit Performance. I reset the code, and after 5 minutes of running the code came back on. About a month ago my 2001 Jeep Wrangler Sport started hesitating intermittently. 0L with 150k on it. The cam sensor is mounted on the driver side near the bell housing. he said it has to be torn down to check. 2003 wrangler tj 4. This only happened when it rained oddly enough. I erased the code, then came back after around 10 miles of driving. On average, the cost of replacing an O2 sensor can range from $150 to $300, including parts and labor. To diagnose the P1391 Dodge code, it typically requires 1. Original poster. Wrangler TJ (Model years 1997–2006) TJ Technical Discussion I’ve been scouring through endless P1391 threads and still can’t figure out what’s causing it. For everyone that has had the P1391 Code, I feel your pain. Crank Position Sensor or Cam Position Sensor intermittent failu In simple language, the error number P1391 indicates a problem with either your Crankshaft Position Sensor (CKP), Camshaft Position Sensor (CMP), or both. Even with the P1391 I was able to get the Jeep to still run. My The CEL was not on before the rebuild. Anyone have suggestions Forums. Asked by fixerupper 150 in Felton, PA on . The right side timing chain tensioner failed after installing a new timing chain kit. Currently it has a new mopar crank sensor and recent unknown cam position sensor. It was pulling the same codes. P1391(M) Intermittent Loss of CMP or CKP Loss of the Cam Position Sensor or Crank Position sensor has occurred. On the sheet that shows me what P1391 is, I still can't figure out what it means. The car will drive but with issues or no power and the rpm's will bounce up and down my jeep can barely make it to 30 mph either. I also placed order with Jeep dealer for OEM crank sensor, being told its on "unknown back order. Jeep will Idle but won't go above 2K RPM. On 97 models the code for a CPS sensor is the same code for a CAM sensor. 0 liter xj with codes p1391 and p0320 had installed a new crank sensor and has a new distributor on it. I changed out the cam and crank sensors. I replaced both cam and crank sensors. Produced from 1997-2006, many consider the Jeep Wrangler TJ to be the last true Wrangler. Google tells me those are the Crankshaft and Cam position sensors. P0353 Codes. The P1391 code should be the Cam Position sensor since the Crank sensor has already been replaced, and the delay start is either the injectors or Fuel pump. I'm planning on changing both sensors tomorrow, I been reading about this all Here is some info I have gathered on the P1391. I give it rpms and when I let off it seems like it pushes out air then dies. Numerous threads detail long and frustrating searches for a "problem" that ended up being cured simply with genuine Jeep repair parts. The code is intermittent loss of either cam or crank This video was uploaded from an Android phone. The shop that rebuilt the motor and replaced the frame had the code come up after everything was put back together yet the jeep runs and idles fine except for the P1391 code. 7 p1391. Next Last. It even threw a transmission code once just to keep things interesting. But this time the P0303 came back with it. I have a 2002 manual 4. I put a new crank shaft position sensor on it two days ago and the check engine light went away. drove. 0L engine rebuild and swap in my 2000 4. From what I have been reading on the web, this could be a cam or crankshaft sensor. After fixing the rear axle in my 2000 Jeep Cherokee I went to pull it out of the garage and it had an extremely rough idle and it would die. 0L manual trans. TRANSMISSION OVER TEMP. 2000 jeep wrangler: the Check Engine light come. asked Jul 23, 2017 by anonymous. Customer: i have a 2001 laredo 4. 0L 5 speed and my brother blew the engine in it. 0. Drove two miles and engine began misfiring and killed and check engine light back on. Posted on Mar 01, 2022. I noticed the alignment hole was out about 5 degrees. *smacks head* Well, probably not solved, but more insight. The interm loss of cmp or ckp came up on my code reader. next day start up and backup to garage and mil on p0720. P1391 was the code. Check engine code P1391 was for the loss of cmp or ckp. P1491. DeadJeeps. Since then I have put about 1000 dollars into it trying to fix it. In simpler terms, this code indicates that there is an issue with the performance of the wheel speed sensor and G-sensor circuit in the vehicle. This is a re Don't let the CEL P1391 code fool you, the problem could be a dirty wire connector or damaged wires going to one of the sensors. My engine starts fine but lopes when it runs. Not showing the 1391 code now, just the P0340. " New rock auto crank sensor arrives today. Drove until 5 days ago with no issues, then we got a heavy wet snow. Ron. Dodge, Chrysler, Jeep, Ram. I recently changed out the IAC & Position Control Sensor. 0 cel code p1391, replaced cam and crank sensors bad misfire 2800 rpm and at and here i am thinking im am the only one throwing these codes lately except im throwing p1391 which is intermittent loss of CMP or CKP and P0352 which is an ignition coil circuit. 2001 Jeep Grand Cherokee code P1391. Intermittent Loss of CMP or CKP Learn More. Loss of the Cam Position Sensor or Crank Position sensor signal has occurred. 1 answer 1. After driving for 45 mins it stalled out again and had same symptoms as before. Numerous threads detail long and frustrating searches for a "problem" that ended up being cured with genuine Jeep repair parts. JeepP1391 Jeep DTC P1391 Make: Jeep Code: P1391 Definition: CKP Or CMP Sensor Signal Intermittent Description: Engine started, engine running, and after every 69-degree CKP Sensor leading edge and trailing signal edge is determined, the PCM updates this data and compares it to the true CMP Sensor port level. 1987-1995. 2002 Jeep Grand Cherokee Laredo 4. Ok. Popular Questions. turn the key off and restart and its fine. Toonces Discussion starter I have a 99 Jeep Grand Cherokee and the engine light and airbag light are staying on and its throwing the code P1391- Camshaft or crankshaft signal sensor intermittent. My Jeep would start fine, but then after a little while of driving or idling it would sputter then shut off! Even after that there was NO Check Engine Light that came on. 2002 Jeep Grand Cherokee. It's important to consult with a qualified So, about a week ago, I replaced my 02 sensor because 1, I got a random misfire code a few weeks back, and 2 I read the post about how when it is replaced it can really help on how the Jeep runs. Trying to figure out why this Jeep runs good while cold and rough when it gets warmed up. 7 is reading a code of P1391. I've been reading threads on this site amongst other sites like crazy trying to get rid of a P1391 code (the intermittent cam/crank position sensor code). After the tow, I read a P0340 code so I replaced the cam position sensor and the crank position sensor. The knick you found is a good place to start since it is likely shorting which is disrupting spark, If the CAM sensor and CPS sensor are My jeep only liked the OE crank sensor. On average, replacing a sensor can cost between $100 and $200, while addressing wiring issues may range from $50 to $150. P1391 code. I have replaced the Crankshaft positioning sensor and that did NOT correct the issue. 5. Also including Plymouth and Eagle. 0 like . My P1391 code came on I changed both my cam and crank sensors. 0 p0300, p0302,p0304,p1391 codes Save Share Reply Quote Like 2000 Jeep Cherokee 4. P1763. Jeep Wrangler TJ Showcase. Along with a manual setup during installation, it also requires a scan tool to do, so a shop It starts right up, drives fine but now I’m getting a P1391 code, Manufacturer Control Igniion System or misfire. 99Jeep Posts: 4 Joined: Thu Jun 22, 2006 1:33 am. on a 2003 jeep liberty sport 3. Jeep P1391. would this be problem with if the jeep pulled Code p1391-loss of cam or crank signals. Come join the discussion about reviews, performance, trail riding, gear, suspension, tires, classifieds, troubleshooting, maintenance, for I have been fighting a P1391 code with my 97 2. Mine was acting much worse at first though, my speedo was jumping all over and the jeep was missing bad. The G-Sensor, also known as the lateral acceleration sensor, is a crucial component in the vehicle's stability control system. Therefore it's important to check the following: Pulled the Code and it was p1391. you tube This tell you all the items that can cause P1391. 1997 Jeep Wrangler Sport 4. 0 Straight 6 5 Speed Manual 205 k Thanks Brian . Save Share I got my 1998 Wrangler (2. Jeep Wrangler YJ Showcase. Barely made it home, check engine light came on and pulled the two codes above and an idle problem code. Jeep and Jeep P1391 - Intermittent Loss of CMP or CKP Signal. it starts 9 times like it should and on the 10 time it starts only on 3 Mechanic's Assistant chat Customer: 1999 jeep wrangler 4. Rad Fan Control Relay Circuit Learn More. I can clear the code and after it cranks for about 3-5 seconds, the code comes back. Post by ForceShield » Sat Aug 23, 2014 6:26 pm. It that fair to say? My 97 Wrangler Sport has a check engine code of P1391. p1391 P0351 code P1391 cam 301 jeep PCM p0353 p0352 P139 P0351 code wiring p1391 4,920 views . - Answered by a verified Jeep Mechanic See what finally fixed my P1391 code on my 1998 Jeep Wrangler Sport! Crankshaft position sensor was purchased on AmazonCamshaft position sensor was purchased The next day, it was no longer raining and Jeep ran fine. Reading over the posts and forum member's with similar problems, it sounds like I need to start by cleaning my throttle body and replacing O2 sensors but the P1391 code has got me looking at replacing the distributor. . Come join the discussion about performance, engine swaps, modifications, classifieds, troubleshooting, maintenance, and more! 1999 Jeep Grand Cherokee V8 4. Cheap parts are cheap for a reason. I check wires and plugs on cps, cks and computer all appear fine. 5L), manual trans, about a month ago. The specific diagnosis time and labor rates at auto repair shops can vary based on factors such as 2001 Jeep Grand Cherokee Limited, 4. Save Share 03 Jeep Liberty stalling and tack jumping!! Our 03 Jeep Liberty will usually start and run fine for about 10 minutes, then it stalls out while going down the road and the RPM gauge bounces Always buy top quality replacement parts and genuine Jeep sensors. Codes of P0353, 0352, 0351 are now being thrown. The jeep starts and runs perfectly but once you hit 2k rpms the engine starts to jump and buck terribly until it hits ~2750 rpm then its back to 2001 jeep cherokee 4. 7 Trouble code P1391. Obviously, the mechanical relationship between the CMP and the CKP was changing — sometimes a little, sometimes a lot. TJ General No codes were being thrown. P0340 and P1391 codes-Need suggestions! Post by pebbles » Mon May 21, 2007 4:59 am. 7L 2WD drive This should've been easy fix but it's turned into a pain in the ***!! P1391 code, Intermittent loss of signal Crank or Cam. The issue is INTERMITTENT P1391* the scanner would allow you to check all codes, check SYNC, selecting graphing and observe CMP and CKP waveforms. TJs are picky when it comes to electrical sensors. Just installed a new rebuilt engine and am getting a P1391 loss of camshaft/crank sensor. I have a 2000 Jeep TJ with a 4. When I pull in I immediately get codes; P0353, P0352, P0351 and P1391. It also threw a bunc read more New member, new jeep owner. The symptoms you have certainly point towards one possibly going bad. Jump to Latest The P1391 of course means the engine isn't seeing either the crankshaft or camshaft position sensor. I keep getting code P1391 on the obd2 scanner. Code P1391 Honda Description. And then erased the code. 2001 Jeep Grand Cherokee Limited, 4. sensor before Just to setup my situation, I had just completed a 4. The specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, code p0340 =- No camshaft signal being received by the computer This indicates that a problem was detected in the camshaft position sensor circuit. 7. My Jeep had similar issues. It started and ran, but would continually throw the P1391 code, sometimes accompanied by the p0351, p0352, p0353 codes. 1997 jeep grand with 4. I googled "P1391 code jeep" and some of the hits mention stuff like besides the sensors themselves being bad that could be timing chain or damaged flywheel. It has a junkyard motor, it was bought knowing this. So, my question is, what in the heck do I do to get rid of this stupid code. The car has about 150k miles on it, rebuilt by the PO. Today it was doing it again but at normal highway speed 60mph. its a reman motor. Customer: I have a 2000 jeep grand cherokee 4. vplrzrgl vgece kjyu kyluz kfxe fnnmhxm yjkdzc qtxdft abil xpj