Woke up this morning went to start jeep dead battery.. changed it out and now jeep wont run. It will start and stay running only if u give it the gas but runs very smooth when running. Stumped.. any ideas??

 

This happened to me once before, got stuck in a food lion parking lot for 3 hours trying to get my jeep running again. I just had to keep revving the engine til it finally stayed on long enough to get home.

 

Do you recall what fixed it or was it just one of those freak things? I don't know where to start lol its been fine, changed the battery and then this.. I know it doesn't have anything to do with the battery just coincidence I guess. After u kept revving it, it cleared up and it was fine?

 

did you make sure you did not knock ant thing loose in the area of the battery accidents happen,vacuum lines wires wont hurt to bouble check

 

Yea gonna check all that as soon as I get outta work it sound to me vacuum related but ill keep u posted thanks alot

 

there is a line in that area goes to the vacuum ball and cruise is in that area if you have it

 

A vacuum leak would not allow the truck to idle or run smooth, it would either be reving high or sputtering. My guess going on the Coil pack or system in the fuel system. How does it rev, how long does it take to get started? Also, is the battery fully charged when you have it running or are you having to jump start it everytime you need to start it? If you are having to jump it, it might be your alturnator.. but it very very hard to tell you what could be the issue.

 

Battery is good just put it in, its revs great no miss or anything and no hesitation at all. If I hit the gas rite as I first crank it it will start rite up but if I take my foot off re gas it wont stay running on its own.

 

might be anti theft ? mine does this when i change the battery. To disarm i have to lock then unlock rear hatch

 

Wow I feel super dumb battery terminal wasn't tightened all the way.. very interesting. And that to the fellas..

 

The PCM has to do a relearn after you jump start it, just start it and keep your foot on the gas for a minute or two.

 

I had the exact same problem several months ago. Turned out I had crazy carbon build up on the engine. But it would run fine, I would just have to keep giving it gas, esp when at stoplights or stop signs or else it'd die. And sometimes when starting had to jump straight on gas to keep running. At garage, they had to run through process of cleaning out carbon build up 5x then it ran like brand new!! Had 190,000 miles on it at the time haha

 

WOW. this is the 3-4th time in 2 days that i have typed the following with the same symtons that u r having.lol.

it could also be an 02 sensor. even though you don't have a ces light, the 02 could still be bad. tps or iac would throw a code imediately.

my 02 was bad and i had no ces light. a couple of days before this, when i went to start it up for the first time of the day, it had a slight rough idle. it soon went away and ran fine. it acted the same way both times before i changed the 02's out.

it went on me on monday and 2 weeks ago i put an aftermarket 02 in it. that went bad. went to the dealer and got a mopar 02 sensor. he told me that chrysler products don't run on bosch o2's. there was a very noticable difference in appearence of the bosch and mopar sensor probes on the 02's.

so make sure you get it a dealer. if that is the problem. just an fyi.

 

I am have the same issue. But I can be driving and mine all of a sudden it cuts off. Put it in N re crank it and ill make it another few miles, it will cut off again and ill have to do it again. Any idea or where to start. I need to be on the road asap ima lose my job if I cant get it fixed by the end of the day

 

could be a failing fuel pump. a pressure test will show for sure.

CPS going bad is another possibility.