No power AT FUEL PUMP new pump not working

JENNY

MEMBER
PONTIAC GRAND PRIX

1997 PONTIAC GRAND PRIX GTP 97000 MILES

I just had a new fuel module and 2 relays installed by the dealer for $1700
Now 1 week later I have no power the the pump
I had the dealer diagnose the problem
I get good spark, injector pulse good, egr good everything looks good
I am told the problem is the PCM and now need it replaced at a cost of $2300.
I do not beleive the dealer as I had the old pump tested by a friend an he told me the old pump was good and the fuse was most likely blown

I've had the system tested and am getting no power at the pump all the fuses, wires and relays were tested

Is there an inline fuse I have missed or could my anti theft unit be shutting of the fuel power circuit

Please advise

Thx

1 Reply

PEPPERMRJ

MECHANIC
1,158 POSTS

I'd be raising cane with that dealer. If he won't make the repair right report him to the better business bureau. Then ask friends, neighbors and relatives for a recommendation on a good mechanic. Not that a computer can't fail but Gee what a coincidence.

Can you disable the antitheft system? Run a new power source temporarily to be sure the pump works and the engine starts.

If it does turn out to be a computer try a junkyard first.