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Fuel Gauge Problem

Tiny
BIGGDRE12
  • MEMBER
  • 2001 CHEVROLET MONTE CARLO
  • 6 CYL
  • AUTOMATIC
  • 155,000 MILES
I have a 2001 chevrolet monte carlo ss and my fuel gauge is not working properly it either reads full or empty how do I fix this?
Thursday, March 31st, 2011 AT 3:19 PM

4 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Could be a problem with sending unit in the tank? There should be an access panel in the trunk. At the wiring for the fuel gage sending unit, for testing, you can use a resistor, between the purple wire and the black wire with white tracer, key on, see if gage reacts to resistor, if it does, I suspect a problem with sending unit in tank. Using a 40 ohm resistor, the gage should read empty. Using a 200 ohm resistor, the gage should read full.
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Thursday, March 31st, 2011 AT 3:56 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Radioshack usually has resistors, don't cost much.
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Thursday, March 31st, 2011 AT 3:57 PM
Tiny
BIGGDRE12
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Thanks for the help
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Thursday, March 31st, 2011 AT 4:10 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Let us know what you find.
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Thursday, March 31st, 2011 AT 4:33 PM

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