StangMuscle

Hey everyone,

Looking to see if anyone can tell me what voltage I should be getting at the fuel pump harness and the FPDM harness. I have a PO191 code and I am having intermittent problems. There was water inside the fpdm harness, could very easily have fried the fpdm. I bought a used fuel pump already so im trying to determine what is the faulty part. The pump rarely primes, and when it does the pump chatters, sounds like a fart. Lol.

Voltage at Fuel pump harness:
Pink/black- 12.07v
Green/Purple- 10.76
Light Blue/Yellow- Ground?
Black- Properly Grounded

Fpdm Harness Voltage:
White- 12.07v
Pink/Blk- 5.83v
Black 1- 5.65v
Black 2- Properly Grounded
The two smaller wires were hard to get to given the port is so small.
White/red- 8.20v
Blue/pink- 2.0v
There are 2 "L" shaped ports in the middle of the harness, upon probing the port on the left of the harness I was able to get a 7.20v reading.. blue/pink wire? The other "L" shape port did not provide a reading.

I believe the voltage at the fuel fail sensor was 5.2v.

Any help would be greatly appreciated! This issue has been driving me nuts, I just want to drive my car! Lol

Thanks!

StangMuscle

Or does anyone know how I can supply power to the pump manually so i can see if it functions properly?