[sundevil64]

I've searched and trying to figure out:

What controls both fuel pumps and fails when the motor is hot?

Thermo switch?


I was stranded by the road today. It's not not the over boost relay, it's not the fp relays.

engine temp was about 190f and would start to sputter and not have any power. Both fuel pumps are running, but at some point they would both intermitently stop at the same time, the motor would stumble, and eventually the motor would shut down.

I saw some post by Jfairman that would indicate the WUR, but that was very recently rebuilt by Larry at CIS Flow tech and the fuel head was checked out.

What controls the fueul pump electricity.

The application is a 78 930 with SC cams and HF turbot with M&K exhaust. Otherwise stock.