Change the temperature sending unit/temp sensor. When starting, the sensor will tell the computer to put the engine in cold start mode to give a bit more fuel and raise the idle a little so it WILL start and keep running without ever touching the throttle. Once warm-up is completed, this sensor will tell the computer to stop the cold start mode and go to normal run mode. THAT is your only problem.
SOURCE: Cold starting
I had bad oxygen sensors do this.
Check it out with a scanner before replacing it.
SOURCE: 95 jeep grand cherokee engine won't idle
check your air intake ducking for cracks....
the problem is probably there, wether you have a broken ducking or a cracked air intake gasket wich allows too much air in the intake manifold....
if the ducking and the gasket are good you might have a timing problem....
SOURCE: Idle problems 1995 Jeep Grand Cherokee Limited V8
There are several possibilites.
When it dies does the Engine Light come-on and stay-on? If so there are codes which are present that can isolate/point you to a more specific problem.
Based soley on your description: I would first check your Spark Plugs, Wires, and Coil. When were they last replaced? If these are fine: When was the Fuel Filter replaced? Air Filter? Check the fuel pressure at the port located on the fuel rail in the engine compartment.
If those check out okay: I would check and/or replace the Idle Sensor and/or the Throttle Position Sensor.
Basic rules on bad idling:
1. Fuel - is there enough getting to the cylinders?
2. Spark - Is there consistent spark getting to all the cyclinders?
3. Air - Is there a air shortage = clogged air filter?
Let me know if this helped, or if you have additinal information or questions. Feel free to contact me a FixYa.com!
SOURCE: 2000 jeep grand V8 low idle then dies
check th ISC idle speed control it will cause what seams like a surg when idleing you have to keep foot on gas to even keep it running.rpm goes high then low . And it is not real expencive maybe 35 bucks and on the side ofthrotle body but when removeing watch how it goes and put it back the same there must be i touch of resistencein the spring in side.
Engine stall or RPM fluctuates
at idle.
This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control
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