Quote:
Originally Posted by Frank Reiner
Jc:
Look first to the main relay for the ECU, and the fuel pump relay (which receives energizing power from the main relay).
Power to the main relay comes directly from battery (always hot). The connection may be a separate wire on the + terminal of the battery, or on a multi-terminal strip on the inner wheel well.
|
Thanks Frank for the reply. I have checked all power and ground readings at ambient temperature and operating temperature when it quits running and I am not losing any power or ground to the ECM, fuel pump relay or main relay. The only thing I have found out of the ordinary was the map sensor was reading 0 ohms on coil number 2. I remove the plug and cleaned the terminals and then I was receiving little over 500 ohms which I think is in specs. But the map sensor is not holding vacuum. Could that possibly keep the vehicle from starting when it is at operating temperature? Shouldn't it just run bad?