relay

So... four months ago i had to replace my radiator fan. it started with symptoms of not getting A/C until we got up to speed, overheating with A/C on, and the A/C would cycle continuously. 2 days ago i replaced it again for the same issue although this time it almost fully overheated on the...

I have a '94 c1500 pick up with a V6. The fuel pump relay is not triggered at times for start up ( no 5 second activation). Bypassing the relay, allows it to start. I suspect a bad connection between the relay and ECM. Anyone know what pin on the ECM controls this? What the ECM needs to...