Oldsmobile/Buick Repair: The ignition module gets hot & motor dies, degree thermostat, crank sensor

Question
Hello. I have a 1989 Buick LeSabre with a 3800 engine that has 100200 miles I have had this car about nine years. When the outdoor temperature goes 80 degree or higher it stalls, hesitate misfire or it died. I have had the coil pack replaced (4 times) and cam sensor and crank sensor and ECM and many other parts, there are no diagnostic codes and fuel pressure is o.k. I change the thermostat from 195 to a 180 then took it out all together. I had the car at a GM dealer and other repair shops for a price of $300 to $600 each time. I am trying to find out what is wrong myself and need any help you can give me. I find that the ignition module gets hot and when it gets hot the motor dies. I found that if I run a little stream of cold water on the ignition module it will continue to run. There seem to be some component that must be making the ignition module run very warm. I would like to know if I am on the right track? And which components that I should replace? Any assistance is greatly appreciated. Thank you. Norm  

Answer
You stated: I change the thermostat from 195 to a 180 then took it out all together.

You MUST keep a 195 degree thermostat in the vehicle at ALL TIMES due to the computer system.

The ignition module usually gets hot due to corroded electrical connections at the ignition module and or the module is HEAT SENSITIVE and needs to be replaced.