I have a 2000 jeep cherokee sport 4.0l ...with the current cold weather the jeep will turn over fine but wont stay idle and will imediatly stall out .... if i give it some gas it will fire up but only stay running when i have it idle'n over 1000rpms ....as soon as i let off the gas the jeep dies out and stalls ...Once the jeep is warmed up it doesnt do any of this at all and runs fine.... any ideas .....???

 

Could be an IAC...

 

what does iac stand for ...and could a die'n battery cause this ?

 

IAC = https://www.cherokeeforum.com/f9/acronyms-3599/


Look it up in our accronyms file. You may find many more that will be helpful to interpret the forum.

 

thank you that link is very useful ... Im going to check grounds on battery terminal and cpu today ... will a carb cleaning fuel additive help clean out the iac and should I use maybe an aresol carb spray ?

 

so i checked and pushed on all the connection on and around the iac and throttle boddy and the problem went away for 2 days but started stalling and not starting unless I have the gas pedal pushed in tonight after work...im guessinf one of those connections or parts in going bad ...any thoughts ?

 

Instead of just pushing on them try unplugging them and spray some contact cleaner (Radio Shack) on them before reassembly. The addition of the cleaner and the physical unplugging/reattachment combo will help to make a better contact surface for the signal that the different components have to send to the ECU.