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1991 Ford F-150 Repair Question


Topics covered: Fuel pump, Fuel tank, Gas.
Mileage: No information provided.

Asked on March 8, 2009

1991 Ford F150 Fuel Pump

Electrical problem
1991 Ford F150 6 cyl Two Wheel Drive Manual 154235 miles

I have a 1991 ford F150 larait xlt with the 4.9L. When i switch it on the fuel pump comes on but it wont shut off. It's a duel fuel tank truck but the back tank is the only one that does this.
Avatar Asked by spider28383

Answer

Replied on March 8, 2009

Need to inspect relay. If relay is faulty it will stick causing pump to run at all times. If relay is OK, suspect faulty pump.

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Tiny Answered by bluelightnin6 (expert)
17,236 answers provided
Replied on March 9, 2009

thanks for the reply. I just replaced the pump in the front tank... and it literalry caught on fire... i guess the caseing on the pump was black and melted. just tankful it didnt blow up. the pump was in a full tank of gas when it did this.

Tiny Response from spider28383
1 question asked