sending unit resetting? - Team Camaro Tech
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post #1 of 2 (permalink) Old Dec 7th, 02, 07:26 AM Thread Starter
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Scott
 
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Join Date: Jun 2000
Location: Austin, TX
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Here is a strange question that I could not find answered in the archives. Is there a procedure for resetting the sending unit/ gas gauge? I have dropped the tank before for suspension work and just reconnected everything and it worked fine that time.

I just finished refurbishing my gas tank: cleaned out the inside, new strainer, sending unit gasket & retaining ring, filler tube connector and rubber fuel line. When I re-installed the tank I made sure all the electrical connections were clean and tight.

I put a few gallons of gas into the tank and fired up the engine when I see the gas guage pegged way past full. ??? Oh crap! So I drop the tank again and start playing with the connections. I hook up a ground wire extension, then unhook the sending unit connector with the circuit energized. The gauge is still pegged past full. Then I reconnect the sending unit wire while the circuit is energized and the gauge goes back to reading normally again.

Do I have a bad sending unit?


Edit: I disconnected the positive battery terminal after getting the gauge to read normally (ignition switch was off) and then it goes back to being pegged past full! Argh!
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[This message has been edited by choptop (edited 12-07-2002).]
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post #2 of 2 (permalink) Old Dec 7th, 02, 09:21 AM
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John
 
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Join Date: Sep 2000
Location: Washington, Michigan USA
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Here's a good link for fuel gauge/sending unit diagnosis:
http://members.core.com/~faldrich/fuelgage.htm

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JohnZ
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'69 Z28 Fathom Green
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