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1999 Ford F-150 fuel pump

Tiny
USMCRETIRED50
  • MEMBER
  • 1999 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 98,000 MILES
I turn the power on and I went to the fuel pump, to check the power and found no power to the wires. The fuse is good and the relay is good too. And check the safey switch to and is good too.
Sunday, July 25th, 2010 AT 10:50 PM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Did you have a helper turn the key while you checked?
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Sunday, July 25th, 2010 AT 11:45 PM
Tiny
USMCRETIRED50
  • MEMBER
  • 1 POST
Yes I did
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Monday, July 26th, 2010 AT 7:21 PM
Tiny
USMCRETIRED50
  • MEMBER
  • 1 POST
I turn on the key and I check the power on the fuel shut-off switch. And I found no power to the switch
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Monday, July 26th, 2010 AT 10:34 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Check the EEC relay in the power distribution box under the hood. Switch it out with another relay with the same part number to see if that changes anything.

Let me know.
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Tuesday, July 27th, 2010 AT 12:34 AM
Tiny
USMCRETIRED50
  • MEMBER
  • 1 POST
Sorry still not working
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Wednesday, July 28th, 2010 AT 6:50 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
You are going to have to trace the wiring to determine where the power is lost. If you have it at the relay, the EEC is good, and not at the fuel shut down, the only thing I can think of is a bad ASD or broken wire.
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Thursday, July 29th, 2010 AT 12:03 AM

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