First off car is a 305 tpi 1988. The car starts and runs fine when it is cooler out like in thee mornings. However when it is hot in the afternoon after work the car won't start. There is no spark coming out of the coil. I have had the module tested and it is good. I checked the coil and checked good but it was not when it would not start. I haven't had a chance to check it when it is acting up because it has only done it when I am not at home.

 

The modules can test ok when they are cool but fail when hot. thats a typical Ignition Control Module

 

They ran the test several times to heat it up and passed every time. They did it at least eight times. When I say hot I mean the temp outside. The car heats up and runs fine. I can drive it all morning long and it is fine. When I leave work and the outside temp is high that is when it messes up

 

ohm out the coolant temp sensor

 

what reading should I be looking for? I will test it when i get it home tonight, or tomorrow after it heats up in the afternoon