Have a 1993 Blazer has 4.3 L engine with the CMFI system. The engine gets to running temp and dies and will not run till it cools down.Have replaced the ignition module and the TP senser. The fuel pump and fuel pressure are within specs. I have a code 15(coolant temperature senser or circuit fault). Would the senser cause my problem? I'm running in circles. Any Ideas?
If you have Code 15, you need a volt meter or you will run into a wall. You measure the coolant resistor ohms when its cold then measure it when the engine is warm.You also have to measure one side for a 5 volt reference.Or better yet when the vehicle reaches operating temperature and begins to stall take the leads of the coolant temperature and jump it together.This tell the ECM your temperature is 266F. If its stays running and doest stall replace temp sensor
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