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1987 Other Chevrolet Models fuel sending unit

Tiny
87CHEVY
  • MEMBER
  • 1987 CHEVROLET
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
I put a new sending unit in my truck yesterday because the unit wasnt getting power I cheked the relay. She got power and now sending unit isnt getting power but th e relayis getting nothing I dont know what the problem is
Wednesday, May 13th, 2009 AT 7:50 AM

2 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
The fuel gauge sending unit has two wires, a ground and a wire that sends a resistance signal to the gauge.

On most GM cars it is 0-90 ohms, 0 being empty and 90 being full.

So, use multimeter and check for resistance, shake car and resistance should fluctuate a few ohms.

Is that your question or is your fuel pump not working?
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Wednesday, May 13th, 2009 AT 8:03 AM
Tiny
87CHEVY
  • MEMBER
  • 3 POSTS
My 87 chevy scottsdale the fuel pump and sending unit isnt turning on the realy is nt comming on either checked every thing I have no idea what the problem is I have gone over my haynes manuel 90 thousand times.
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Wednesday, May 13th, 2009 AT 9:22 AM

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