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Renewed fuel pump, now fuel gauge is showing empty when full and vice Versa.

Tiny
GAZA77
  • MEMBER
  • 1997 FORD ESCORT
  • 90,000 MILES
Changed fuel pump and now it is working back to front. Showing empty when full and full when empty
Saturday, April 7th, 2012 AT 5:58 PM

7 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Did you replace the entire module or just the pump?

Roy
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Saturday, April 7th, 2012 AT 6:01 PM
Tiny
GAZA77
  • MEMBER
  • 4 POSTS
The in-tank lift pump came from an x reg escort and was working perfectly. I have put it into my r reg escort and is constantly registering full. When I take it out and work the float manually the guage seems to be working in reverse (when float is at empty guage shows full & when float is at full guage shows empty). Is it possible to bridge wiring?
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Saturday, April 7th, 2012 AT 6:37 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Nope, different units. You need the correct sender to make this work.
Can you change just the pump from the donor to yours?

Roy
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Saturday, April 7th, 2012 AT 6:40 PM
Tiny
GAZA77
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  • 4 POSTS
The pump was the problem(would not force fuel to rail) unit doesnt look like it would seperate?
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Saturday, April 7th, 2012 AT 6:52 PM
Tiny
ASEMASTER6371
  • MECHANIC
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It does but in most cases, the plastic clips break if your not carefull.
I would try to get the right unit with matching numbers.

Roy
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Saturday, April 7th, 2012 AT 7:01 PM
Tiny
GAZA77
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  • 4 POSTS
Will try that, thanks for the help. :D
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Saturday, April 7th, 2012 AT 7:33 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Good luck
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Saturday, April 7th, 2012 AT 7:52 PM

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