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diaz425 06-02-2013 02:00 AM

Stalling problem after warm up
my jeep just started stalling after warm up. at first i thought i ran out of fuel. after a min i would start her and she would start fine than dies. i had to get it towed to my house. the next day on a cold start i started her up with no problems after about 10 mins warming up it stalls. than i started again than stalls 2 mins later. what is causing the problem. i returned the 6 months old fuel pump and got a new one just in case that was the problem (still under warranty. haven't install yet. rainy day).
btw i just bought new coil. not yet install (it's 2am)

any other ideas??

Old4X 06-02-2013 08:09 AM

Is it rich or lean running when it stalls?

EABiker 06-02-2013 08:17 AM

Is it showing any codes? If it runs cold and not warmed up, that most likely means a sensor has gone bad. When cold, the ECU controls the engine by using a fixed set of curves, (open loop). When the engine reaches operating temperature, the ECU monitors the inputs from the sensors, and adjust the fuel and timing accordingly, (closed loop). If one of the sensors has gone bad...well you know the saying, "garbage in, garbage out".

Que89YJ 06-02-2013 05:26 PM

Disconnect your O2 sensor and see if it still does it. O2 or engine temp sensor.

diaz425 06-02-2013 06:41 PM

Forgot to mention. When it is about to stall it bogs like if i ran out of gas.

Old4X 06-02-2013 08:41 PM

What do your plugs look like?

UZI4U 06-03-2013 08:07 AM

Run it and let it get warm. If the head pipe before the cat converter is too hot to touch and the pipe behind it is relatively cool, your cat converter is plugged.

diaz425 06-03-2013 05:12 PM

i put on new fuel pump and coil. i also tighten the o2 sensor (was loose). after doing those i started her up and notice the rpm needle acting up just before the car stalled.
i will try what UZI4U said about the cat. cant do it now gotta go to work :mad:

diaz425 06-03-2013 05:24 PM

i started her up right now ran great than dies out (as if i shut her off).
I read somewhere in here about ICM. Where is the ICM located at?

here is the where i found out about the ICM

Old4X 06-03-2013 07:44 PM

The ICM is under the washer bottle

flcracker 06-03-2013 07:47 PM


Originally Posted by Old4X (Post 15515851)
The ICM is under the washer bottle

That is the ecm, I think the icm is in the distributor

Old4X 06-03-2013 09:06 PM

4.2 ICM is under the washer bottle like I said. Look it up on the maint manual

flcracker 06-03-2013 09:17 PM


Originally Posted by Old4X (Post 15516252)
4.2 ICM is under the washer bottle like I said. Look it up on the maint manual

Crap, sorry, spoke too soon... that is where the ecm is on mine.... note to self: don't open mouth before engaging brain...

Que89YJ 06-03-2013 10:14 PM

icm is the coil with the plug wire running to the distributor.

Que89YJ 06-03-2013 10:14 PM

ignition coil module

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