1st start in morning hard???

[dhop11]

ok i have replacer idle control motor iac sensor and tps and the problem still exists even the dealer dont know why it is but when i start 1 st thing in the morning i have to pat the gas pedal to keep it idling until a few minutes and then it will keep on its on any help would be appreciated...

[dksob81]

Does the jeep start then die immediately?

[dhop11]

Originally Posted by dksob81

Does the jeep start then die immediately?

yes

[dksob81]

OK, thats deffinately a bad Idle Air Control Valve. was the replacement a WELLS brand (from autozone), I had this problem with my IAC a couple months ago and bought a new one from autozone (WELLS brand) and it was fine for 2 days then started doing it again. I knew that autozone aftermarket parts supplier wasn't that dependable on quality, so I decided I would try a different brand/different parts store, then I remember that this one had a warranty, so I decided I would take it back and get a new one (under warranty) and try it, then if the problem persisted I would go to another store. Well after replacing it the second time it did the trick, it's been about 2 months now and I haven't had any problems starting.

NOTE: "MAKE SURE YOU DISCONNECT THE NEGATIVE BATTERY CABLE BEFORE REMOVING/REPLACING THE IAC." I forgot to d/c the battery when I replace my IAC (the 1st time), but the 2nd time I made sure of it, This may or may not have affected it.

[dhop11]

Originally Posted by dksob81

OK, thats deffinately a bad Idle Air Control Valve. was the replacement a WELLS brand (from autozone), I had this problem with my IAC a couple months ago and bought a new one from autozone (WELLS brand) and it was fine for 2 days then started doing it again. I knew that autozone aftermarket parts supplier wasn't that dependable on quality, so I decided I would try a different brand/different parts store, then I remember that this one had a warranty, so I decided I would take it back and get a new one (under warranty) and try it, then if the problem persisted I would go to another store. Well after replacing it the second time it did the trick, it's been about 2 months now and I haven't had any problems starting.

NOTE: "MAKE SURE YOU DISCONNECT THE NEGATIVE BATTERY CABLE BEFORE REMOVING/REPLACING THE IAC." I forgot to d/c the battery when I replace my IAC (the 1st time), but the 2nd time I made sure of it, This may or may not have affected it.

is that the valve in the back of a throttle body on the 5.8 l 318 engine if it is i had a mechanic replace that piece but i know it still could be a defective part i dont know where it came from also would it help to un hook the negative battery cable now or is it too late???

[dksob81]

yes the IAC is located on the back of the Throttle Body on the 5.2L/318ci. No, it is too late to d/c it now if it was not before it was replaced.

some people have also had success by just cleaning the throttle body and ports with throttle body cleaner.

[dhop11]

what if i said also this immediate dying after cranking only happens once in a while not every day would you still say it is the idle air control valve??

[dksob81]

Yes, I had this same problem in my jeep. and I started tracing it back what did I do the night before that may have made it do this, then I thought I figured it out (I thought), it was only doing it when I was facing downhill (odd I know) so I parked facing up hill, this worked for like 5/6 days straight then it started again, and shortly after that it did it about 95% of the time, and when it wouldn't stall, it would start then the idle would drop real low then kick back up and go real low and back up again for about 30 seconds-1 minute before it would smooth out.

[dksob81]

You might also want to try to clean the Throttle Body thoroughly, before posibly wasting money on a new IAC.