96xj33

try your coolant temp sensor..my jeep had the same probs as you its the one in the front of the valve cover and it hooks up to your computer..its 18.99 at autozone.

96xj33

and check for a cracked manifold..that will make it run like that

gintaras

yes, it mainly happens when cold, but it has occured when hot, just not as much.. I have a new fuel pump and pickup screen, so it is not the filter..

My next guess us the CP, but I have always read that they don't go out like that, that they either work or they dont

gintaras

good idea, I will swap that out this weekend... ANd I highy doubt I have a cracked manifold, i have had it off for cleaning and filled it with water to rinse it, it looked good to me.. and I also have a new exhaust manifold/header..

I am almost there, just need to figure out this stumble and I will have worked out all the bugs.. I no longer have a CEL, so that is a huge step in the right direction.

rivercrazy

Man I can't wait til you figure this out. Mine is doing the EXACT same thing! I just changed the fuel pump and filter and like you said it runs a little better but still cuts out when cool. I cleaned out all my sensors with little inprovement. I was going to start changing parts but I'll let you do the trial and error.

VARG7

i had that same exact problum i tried everyting that i thought it could be. it turned out to be a bad fuel pump. try changing that almost garenteed it will fix ur problum. give it a try

gintaras

I just put a new fuel pump in it.. all that did was give me an incorrect fuel gauge reading

rivercrazy

Dude, it's a little spooky how these things all have the same little quorks. Mine did the same.

bridge9

i taught this jeep thing was ment to be fun!!! this is killing me, i really hope you sort out your jeep. itsa real pain when you can't find whats wrong even with expert help. then in the end you find its something real simple, anyway hope you fix it.

thelaststarfighter13

I would definitely take the advice about the IAC valve. You can get the tamper-proof bit at walmart pretty cheap and all you need to do is get a can of brake clean and get it nice and sparkly. If it fixes it Great, if not well your IAC is clean you have a new tool and it only cost you a half a can of brake kleen

gintaras

why would I need a tamper proof bit?

thelaststarfighter13

Yours might be different but look at the screws that hold the IAC on there. I think they are either a Hex or a Torx with a little pin, so your bit has to have a little hole in the end of it.

hghgrad

I'm having the same issue. Some days it's there and other days it's not. I don't pull out into traffic any more after it's magically appeared the last couple times.

rivercrazy

Did you change your coolant temp sensor this weekend? Any changes?

thelaststarfighter13

any update?