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Jeep Liberty Starting and Stalling Problems



  • ervinoervino Posts: 1
    I had a similar problem on my 03 Liberty. It just died and would not start. After many days, they determined a faulty crank sensor burned out all coils. They replaced the sensor and six coils and seems to be fine.
  • ghardy19ghardy19 Posts: 2
    I use my Jeep to deliver News paper where I live every day for the last two years (about 115 miles a day) and never had a problem until the 12th of this month then halfway through the route the Jeep just died. The first couple of times it started right up and I was able to drive a few miles but after a while it would stall and it was harder to start and I could drive only a few hundred feet and stop. I noticed the tach would do it's little dance. One time it went to 7grand and I had no power. It took me about 3hours to drive 20 miles home. I let it sit for about a hour and it started right up but ran rough, black smoke was comming out of the tail pipe and you could smell gas.. Used a hand scanner on it and found a code p0725. (Engine speed sensor malfunction) Monday I brought it to a Dealership and they told me I needed a PCM and Cam & Crackshaft sensor. The cost almost $1800.00. I read this forum the night before and knew most likely the PCM was good and they justed wanted to make money off me. I told them to get bent and brought to a local garage and ask them to replace my cam and crankshaft sensor. It took them 30 min. and it was running like a champ. They were not sure if it was going to work but after a week and almost 1000 miles I have not had a problem. I almost forgot I have 128,000 on my jeep and still going strong. :shades:
  • seven15seven15 Posts: 1
    hi my name is shonn and i have a question for you.i have a 99 jeep cherokee.a code came up,p1391.its getting spark,and its getting fuel too.i need to know do the tone wheel have anything to do with it? :mad:
  • rashawrashaw Posts: 2
    We recently had similar behavior. There is another post on this site that explains the issue and the fix. That post stated he replaced the cam shaft position sensor and the crank shaft position sensor and cleaned the throttle body. That trio cured the problem but he wasn't sure which one. I replaced the cam shaft position sensor today on ours and that did NOT cure the problem. I therefore believe that it is most probably the crank shaft sensor that needs to be replaced. That is my next move once the stores are open again after Memorial Day. So, have someone change that sensor, it's a key input to the "computer" that controls the engine and much else. I replaced the cam shaft sensor myself, $38 for the sensor. Not sure but should be about the same for the crank shaft sensor. Good luck.
  • tidestertidester Posts: 10,110
    That code (p1391) was discussed here:

    tidester, host
    SUVs and Smart Shopper
  • mfitzykmfitzyk Posts: 6
    You can replace the cam sensor, crank sensor and every other sensor on the jeep and it will probably still stall. Clean the throttle body, a $7 can of cleaner beats paying $38 for sensors that will (as you mentioned) NOT fix the problem. When the engine stalls unexpectantly (i.e. from not getting enough air/fuel through the throttle body) the sensors involved in the engine turning (i.e. cam/crank) enter an error code. That is what is showing up on your p-whatever code. You can continue to replace sensors until you are blue in the face or you have invested more money than the jeep is worth and chances are it will still not run. Less is more, try the $7 option before you dump another $38 and an equal amount of frustration into it.
  • rashawrashaw Posts: 2
    After replacing cam shaft sensor, which did not fix the stalling issue, I replaced the crankshaft sensor (just above the passenger side CV joint) for $28 and that one did correct the problem. As long as you can get under the vehicle, safely, it's one cap screw that can be pulled with a ratchet and a 12 mm socket, one electrical connector. Haven't gotten to spraying the throttle body yet, does not appear to be an issue based on how it's running.
  • jhaddockjhaddock Posts: 1
    my 02 jeep liberty is having a huge problem the mechanic after two days has determined that he CANT FIND THE PROBLEM!! but he does see the problem, the problem with my liberty is...

    after around 20 minutes of driving it wont drive anymore when you press the gas it just wont go!, the power stays on it jerks then shuts down.. when you watch the RPM the do a dance back and fourth.. I can restart it only one time : buy raving the gas then it will only go about another 2 minutes before it wont even click to start.. i know its not the battery b/c all the power stays on but the engine wont start.. i replaced the crank sensor like most have and it still does not fix it... can someone please tell me anything else i should try that will not cost me thousands my liberty has 182,000 so its not worth it to spend thousands to fix the problem if that the case... my boyfriend is all over me about figuring out the problem so i need to so it ASAP>> PLEASE HELP WITH INFO AND IDEAS
  • jkelly2jkelly2 Posts: 1
    I have a 2002 liberty that won't start. It started just once about a month ago, after messing around with the gear shift, I got it going. Last week after filling it up with gas, it wouldn't start at all. We tried over and over. It ended up getting towed. It still wouldn't start at the shop. However, they now cannot determine what is wrong with it because sometimes it will start and sometimes it won't. It is still there, and I am looking for any clues as to what may be wrong with it! PLEASE HELP! Thanks
  • rich14rich14 Posts: 15
    it was the cap position sensor
  • matrix2matrix2 Posts: 3
    i have a 2002 jeep liberty. i just replaced my battery yet is still stalls and shuts off on my while driving, also the obd light has come on again. and now my locks will not lock when i drive off like they are supposed to. any ideas.
  • francesmfrancesm Posts: 3
    My 2004 Jeep Liberty with only 10,000 miles just suddenly refused to start after being fine a few minutes
    before. I had it towed to the dealer and after three weeks of what I think was trial and error I finally have it back and it seems to be fine. They replaced the fuel pump, computer, fuel injector and then a second fuel pump saying the first one was defective. I had puchased
    the extended warranty when I bought the car so I incurred no expense except the $100 deductible. My advice would be to anyone purchasing a car these days is to bite the bullet and buy the extended warranty. Mine included rental for five days and the dealer paid for the remainder time. I shutter to think what this three week repair job would have cost me. By the way, this is the first problem I have had with the Liberty and I really do enjoy driving it.
  • My son, our neighbor [who was the chief or head machanic for a John Deer dealer] and I have been working with biodeasel and use motor oil for over a year and a half having much success in saving on fuel expenses. I bought a Jeep Liberty Limited 2005 model with CRD last September and have used our processed oil [cleansed with a center fuse] with limited sucess in the Jeep diesel. When the fuel water filter gets 5,000 miles it must be changede or the diesel stalls and will not start. Now after sucessfuly running 10 galons of our cleaned oil on the next 10 gallions the moter is stalling. To start the diesel you must turn the switch off then back on and the motor will start. This means you can see the RPM drop on stalling ,<img src="move the transmission to Neutral, switch ignetion switch off, then on, and start the engine switch transmission to drive and excelerat slowly and keep th Jeep running or/and moving.
    We experenced similar condition with a Ford250 pick up we own and found the cam locating sensor needed replacing.
    To my Knowledge the CRD has no such sensor. The CRD acts as if it is not getting fuel. Could the Comon rail not be pulling or have enough suction to move fuel through the fuel filter? Could a small fuel pump help?
    Has aneyone had this problem? Jon D
  • One obvious diagnostic would be to run straight diesel fuel in the truck and see how it behaves, or perhaps pump biodiesel might be another good experiment.
  • Yes! the jeep Liberty '05 runs very well on store bought diesel fuel. This must be because it was designed to do so. The problem is that it stalls on centefuse cleaned oil that it and other diesels are running on. Could the common rail not create enough suction to pull fuel through the fuel filter? Could installing an auxellery fuel pump solve this problem? Is there a fuel filter that would let more fuel get to the motor? I am open to any suggestion. Yes another expert said I could trade to get another diesel.
  • I've been reading about the problems others are having with their liberties. With mine the same problem happens. We just went on vacation and the jeep sat for 6 days. When we came back and tried to go shopping as soon as the jeep reached operating temp, it bogged out and the RPM's won't go over 2000 without the jeep chugging and can't travel over 30mph. My husband has used carb cleaner which was a temporary quick fix. He has replaced one of the oxygen sensors and just today replaced the throttle control sensor. No dice. still the problem remains. Anyone know why this is happening when the vehicle sits too long or is that just coinsidence. This is very frustrating.
  • First: Has your fuel filter been changed recently? If not DO SO!
    Blwing the nose of the CRD.
    Take your Jeep out on the High WAy where you can go fast. From a slow speed excellerat as quickly as possible . You should see a clowd of black exoust. Afetr several axcellerations the black shouldc go away or turn white. This is a fix.
    Get some biodiesel it will help. This works fore me. Pardon the sloppy message as I must hurry to work.jdh;-) :)
  • i'm having that sam problem where after around 20 minutes of driving it wont drive anymore when you press the gas it just wont go!, the power stays on it jerks then shuts down.. when you watch the RPM the do a dance back and fourth.. I can restart it only one time : buy raving the gas then it will only go about another 2 minutes before it wont even click to start.. i know its not the crank sensor because it has been replaced, the battery has been replaced also, injectors have been cleaned, carberator flushed i'm still at a loss. PLEASE HELP!!!
  • We owned a 2005 Jeep Liberty for about 3 months before getting so frustrated we traded it in. There was ~50K miles on it, same problem. On a 2-3 mile trip the Jeep would stall out. Would have to restart it, would sputter, sluggish acceleration, stall. The dealer we bought it from was a crook, so we took it to the school's auto shop that my wife was teaching at. Instead of replacing cam/crank sensors, which is what the error codes stated had faulted the engine, the master tech @ the school suggested cleaning out the throttle body first. For a $7 can of throttle body cleaner, the problem was solved. Obviously labor was not included as this was a school run program, but this seemed to fix the problem. If you read up on this, it should be something you can do on your own. For the next couple of weeks we had the Jeep, it no longer stalled, which was previously a daily/multiple times per day phenomenon. Ultimately we sold the Jeep (have never been happier with our new Explorer). The way the mechanic explained it to us, because of new emission standards, some of the exhaust is brought back through the intake/throttle body apparatus leading to heavy carbon deposition (our throttle body was heavily carbonized), which leads to decreased air/gas delivery to the engine causing it to stall out. This should not happen @ highway speeds because of the higher RPM's and inertia of the engine and relatively lower gas/oxygen demands. If you think about it, engines require more fuel/oxygen during high demand..i.e acceleration. Your engine is not going over 2000 RPM because there is not enough fuel/oxygen getting delivered to the cylinders for adequate combustion. The symptoms are worse when the engine heats up because as the air gets hotter it is less dense meaning there is less oxygen to help burn the fuel again causing stalling/sputtering/sluggishness. I would do one of two things:

    1. Clean the throttle body or better yet -
    2. Sell the Jeep
  • Thanks for your input on the Jeep stalling problem. My husband and I viewed the many suggestions people sent in. 2 years ago he tried spraying carb cleaner into the throttle body intake. it was a quick fix but short lived. As soon as we went on vacation last year and the Jeep sat idle for a week we had the same problem. So he went with the quick fix again. It ran great. This year after vacation; same problem, only this time there was no fixing it, so this time he thought it might be the throttle position sensor because our other Jeep had that problem. Unfortunately it didn't help, so I found this forum and showed him some of the entries. After reading yours he took the Jeep to our mechanic and he hooked up his hand held computer and it displayed the message crank shaft speed sensor. We ordered the part and had him install it. That was about 2 weeks ago and so far not a problem. It's running great. So if anyone out there is having these problems with their Liberty stalling it may be that sensor.
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