My jeep cherokee will die on idle, what is the problem ?

It could be that your crank sensor needs renewing

sounds like the idling solenoid. this solenoid when powered by 12 volts, would let a small amount of gas to the carburetor or intake line which ever you are using. if it is a fuel injection, then there could be a problem with the computer that monitors idling.

you don't have an idling.

tnx 4 using fixya,

drcool

Do you like the vehicle? Are you mechanically inclined? Vacuum leaks are sometimes dificult to find. It could be a vacuum hose, a leaking intake or a blown gasket. Spray around the outside of the intake with a carb cleaner spray, look for any change in the engine, when it chages you have found the area of your leak

your idle air control valve is going out located behind the throttle body.

I suggtes to check vacuum lines.

most efi (electronic fuel injected) vehicles have idle mixtures which are controlled through sensors,.you probably have a bad sensor in the somewhere.. it could be vacume controlled one which controls the cold start switch to grab the airflow from the manifold.. more details are better.
Best regards
Ck

It has this problem at Idle? If this problem is while the vehicle is moving but not at Idle or when you rev the motor check your A frame, Connecting Rods, Tie Rods and Ball joints. You also want to check to loose lug nuts or a bent rim. If it occurs when it sits at idle check the motor mounts and bushings and the transmission mounts and bushings.

two possible problems come to mind,,,
1.) idle air control valve (IAC) is restricted
2.) throttle position sensor is out of adjustment

to test the IAC, find a vacuum hose smaller than the size of a golf tee anywhere near the throttle body and unplug it....then start the vehicle. if the vehicle idles then replace theIAC

if this doesn't help see a technician that can diagnose the concern further and look at things like fuel trims, MAF values and BARO

does your jeep run rough? idle is real low? and when you are driving and push the gas hard it doesnt want to move? if so it is most likely the mass air flow sensor. i had to replace that 2 or 3 times on my 1999 jeep cherokee

can you tell me if you have problems starting the vehicle?