I shorted out the +12v fuel pump sig wire that does to my fuel pump relay, now there is no more +12v there. Vehicle does run, as +12v does go to the FP relay through the oil pressure switch. So now for me to get fuel pressure, I need to crank the engine for a couple seconds.

My question is: Is my ECM (747 btw) NFG, or can some sort of part be replaced on the curcuit board, or something. Other than non +12v on this wire (I think its pin A1), the ecm works perfectly.

 

The output transistor popped, possibly the trace fried, but every one I've seen has been the transistor. Quite common at that. Use a 2N2907 (metal can) transistor to replace it. Looking at the top of the PCB, harness connectors at your stomach, lower right corner. Two transistors right next to each other. It will be the larger of the two.

RBob.

 

I got a 747 out of the junk yard that had the trace and the transistor burnt. Fixed both and walla everything is right in the world.

 

Thanks alot guys.