Mechanics

FUEL PUMP PROBLEM

2001 Mercury Sable

Engine Mechanical problem
2001 Mercury Sable 6 cyl Front Wheel Drive Automatic 104000 miles

fuel pump not starting intermittently. Relay cycling ok 2 seconds with key on without failure, remove relay and jump 12 volt and fp lead pump comes on 8 out of 10 times. Could inertia switch have dirty n/c contacts and where does the fuel pump ground lead terminate on chassis
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Harpwh23
January 12, 2010.




If switch fail will not start at all and need to be reset
if relay Supplying power

Suspect pump module

BMRFIXIT
Jan 17, 2010.
Reply from sender: Found problem to be a high resistance ground, ran sepatate ground wire from black wire of pump harness (ground side of pump motor) to chassis.
Working fine now.

Thanks for your asistance.
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Tiny
Harpwh23
Jan 17, 2010.
Thank you for posting your finding and the fix so others can benefits from it

BMRFIXIT
Jan 17, 2010.

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