2003 jeep liberty cutting off at standstill?

Paige

New member
Okay, so almost five months ago I bought a 2003 jeep liberty sport. I have already had four problems with it that have put it out of commission for almost a week each time. I need this car to get to and from school and right now it is being a piece of junk. It has been extremely well taken care of, but we have had to replace multiple things on it. But, we knew this would happen because you don't know exactly what you get when you buy a used car...
So, the most recent problem has been it quitting at a stand still. I will be sitting at a stoplight or stop sign and it runs really rough for less then a minute, then cuts off completely.

If I put it in neutral or park and rev the engine, it seems fine. But, when my foot is off the gas, moving to the brake, or on the brake, it cuts off. So, basically, when I am moving, it is running perfectly fine.
We already took it down to the dodge place, and they cleaned the throttle body and replaced the throttle position sensor. (this cost us almost $400) It ran great for four weeks and then about five days ago it did it all again.
So, we took it back down there, it almost cut off on the way there, and they had it for a few days and said absolutely nothing was wrong. They drove it 81 miles, I keep up with the mileage, and it had no problems at all! I have absolutely no idea what to do about this. I don't know whether to get rid of it now, or wait it out and try to fix all the reccurring issues.
Also, it only shuts off when the engine is warm. If I let it sit and cool after it cuts off, for 30-40 minutes not running, it will run again fine until it warms up. Then it will cut off at a standstill after it warms up.
The tachometer also bounces around before it cuts itself off.
 
This is a very simple problem with an easy answer. YOu have a dirty IDLE AIR CONTROL VALVE. It is on or near the throttle body. One can of gum-out spray for $3 will take care of it. While your at it, clean the throttle body, and run the gum-out through your throttle body with engine running at different speeds. This will flush out the O2 sensor and any unburnt carbon in the converter. You save $$$ all the way around. Your fuel mileage will go up, and your carbon deposits will go down. VOILA!
 
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