If my car runs for even a short length of time the fuel pump circuit gets hot. I have replaced all the relays, the oil pressure switch, and the fuel pump, even tried a different MAF sensor but none of that helped.
I concerned that the wires may melt. Has this happened to anybody elses car, and what did you do to resolve it?


Thanks
John

 

When you say the circuit gets hot, what exactly do you mean? Are the wires getting hot, the relays?

 

The wires are getting hot, after driving around for 20 minutes or so, I would guess that the wires are 110-120 degrees.

At first I thought it was ambient heat from the radiator, but the wires are heating up long before the radiator does.

 

Are you using a stock fuel pump or aftermarket?

 

I found the problem, or at least i think so, circuit 120( the tan wire w/ white stripe) is shorted to ground, if I put an ohm meter across cir 120 and the neg bat terminal, the meter zeros.