Fuel gauge vs sender?
Thread Starter
Racer
Joined: Mar 2008
Posts: 428
Likes: 0
Fuel gauge vs sender?
I have a fuel gauge that reads well over the full mark when I top off the tank. It reads alittle less than half when its down to a few gallons. Has anyone seen this scenario before? I would like to blame the sender but I can’t rule out the gauge. https://www.corvetteforum.com/forums...illy_nilly.gif
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
What year Corvette? I would assume '80 because of your name but your profile is not filled out so guessing is pointless.
Fill out your profile...it will help us diagnose problems faster.
Fill out your profile...it will help us diagnose problems faster.
Thread Starter
Racer
Joined: Mar 2008
Posts: 428
Likes: 0
Former Vendor
Joined: Aug 2006
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From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
On all Corvettes 1963-1982 the fuel gauge should put out 0 – 90 ohms. 0 being empty and 90 full. Test the out put of your sending unit and see what it’s putting out when you have a full tank. You may have a bad potentiometer in the gauge giving you the wrong resistance reading when full.
I have also seen sending units where the top for the sender was bent allowing the gauge to surpass the 90 ohms reading which would send a higher reading to the dash unit.
I have also seen sending units where the top for the sender was bent allowing the gauge to surpass the 90 ohms reading which would send a higher reading to the dash unit.
Thread Starter
Racer
Joined: Mar 2008
Posts: 428
Likes: 0
On all Corvettes 1963-1982 the fuel gauge should put out 0 – 90 ohms. 0 being empty and 90 full. Test the out put of your sending unit and see what it’s putting out when you have a full tank. You may have a bad potentiometer in the gauge giving you the wrong resistance reading when full.
I have also seen sending units where the top for the sender was bent allowing the gauge to surpass the 90 ohms reading which would send a higher reading to the dash unit.
I have also seen sending units where the top for the sender was bent allowing the gauge to surpass the 90 ohms reading which would send a higher reading to the dash unit.
