Stalling when hot

I`m working on a 92 Century that has been stalling when the engine
warms up. The warmer the weather, the more frequent the stalling.
It will stall when driving or when stopped, just like you turned the key off,
no sputter or anything. After it cools down for about 15-20 minutes,
it will start back up and run fine til it heats back up. It acts like something is
getting too hot and killing the spark. I have put a new ignition module on it
but that didnt cure the problem.
Any ideas? I`m getting frustrated. :confused:
Thanks!!

I would check the fuel pump. If the fuel pump overheats then it will shut down the car just like you said it is doing. After the pump cools down it will work again for a period of time. This happens with older cars especially if you have let the fuel tank run below one quarter of a tank for a while.

These engines were sensitive to the operation of the idle air control, especially when hot. Typically, if the ports and control pintle itself are dirty, the resulting inconsistency caused stalling. Try cleaning the IAC, ports and throttle body, including the blade. Ray

Thanks guys. I`ve eliminated the feul pump, had a gauge on it when it stalled, good pressure.
I`m putting a crank sensor on it now, If that doesnt fix it, I`ll ck the IAC.

Well, the crank sensor fixed it. Thanks for the help.

Well, the crank sensor fixed it. Thanks for the help.


I've got the same problem with stalling when hot. Warmer weather seems to make matters worse. I've changed the ignition module and coils and the mass air flow sensor but still the same problem. Help me out here - what and where is the crank sensor and the IAC?

The crank position sensor tells the coils when to fire by reading the position of the crank shaft and sending a signal to the computer. They do go bad and by replacing yours you may be able to correct the problem you are having. In order to give you accurate information what size engine do you have?
The location varies by the engine size.

The crank position sensor tells the coils when to fire by reading the position of the crank shaft and sending a signal to the computer. They do go bad and by replacing yours you may be able to correct the problem you are having. In order to give you accurate information what size engine do you have?
The location varies by the engine size.


3.3 L

Based on the design of the CPS you should find it located in the area of the harmonic balancer in the front of the engine. It is similar to the cps on the 3.8. You will need to remove the harmonic balancer to get to the CPS.