jcb928

I am working on my 85 project car and the fuel pump is not getting power.

Here is what I have changed,

LH/EZK
Fuel Pump
Relay/Fuse
Fuel Filter

Where is ground for the fuel pump? MPVIII? Anything else to check?

JHowell37

Have you checked the leads that go to the pump for corrosion. When I first got my '85 it would only run intermittently. At that time I knew little about specific 928 issues so the first thing I did was have some crank the engine while I placed my hand on the pump to see if it was running and it wasn't. So I removed the pump and tested it on a battery and it worked. While it was out of the car I inspected the wiring and followed it up about three feet and found several breaks in the insulation, heavy corrosion, etc. I inspected back to the point where I found good wire in good condition, cut it off and replaced about a 3-4 foot section and haven't had a single issue since. So it's definitely worth it to visually inspect things and see what's going on. Once the wires leave the harness and exit the car, they go out into the wheel well where water and dirt are constantly flung on them. Eventually the insulation will get torn/cut and once water gets inside, the corrosion begins.

Jim bailey - 928 International

Try running a jumper wire from the battery + directly to the pump positive see if it runs the pump and maybe the car ! If the car runs it is a huge motivation to figure out the real problem

jcb928

Clipped the 12v tester onto the fuel pump ground wire and it would not light up when touching 12v power. Where does the ground from the fuel pump go?

I think I will try Jim's idea tomorrow.