1991 Buick Century Support Question
1991 Buick Century Support Question
Find answers below for this question about 1991 Buick Century.Question posted by insanesplain on July 9th, 2012
Gas Guage
My gas gauge is stuck at half a tank,how can i fix this?
Current Answers
Answer #1: Posted by roadrunnertim on July 9th, 2012 10:41 AM
roadrunnertim
Member since:
May 9th, 2012 Points: 1,071,190
Member since:
May 9th, 2012 Points: 1,071,190
Check for a blown fuse first. Your owner's manual should tell you where the fuse for the gas gauge is located.
If it isn't the fuse, then it's probably the fuel tank sending unit. That part has a float and it works on electrical resistance. After 21 years, your sending unit is probably defective.
It's located in the gas tank, so you'll have to drop the tank to access the unit. The sending unit is in the top of the tank. Not too hard to do, but you will have to save the old fuel pump that's attached to the unit and install it on the new sending unit.
Also, be sure to relieve the fuel pressure before opening the fuel line. You do that by removing the fuel pump relay (fuse) and then cranking the car. It shouldn't start and the pressure will be relieved.
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