1987 Other Chevrolet Models fuel sending unit

1987 CHEVROLET
200,000 MILES • V8 • 4WD • AUTOMATIC
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87CHEVY
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  • 3 POSTS
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
May 13, 2009 at 7:50 AM
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MMPRINCE4000
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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?
May 13, 2009 at 8:03 AM
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87CHEVY
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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 ......
May 13, 2009 at 9:22 AM
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