Inaccurate fuel sender
October 8th, 2018, 10:18 AM
#1
Inaccurate fuel sender
Last fall I had the fuel tank out to fix a leak around the fuel sending unit. The sender and gauge worked correctly but the gasket leaked. I had already purchased a new sending unit prior to dropping the tank just in case I needed, so I used the new one, instead of just replacing the gasket. Now the gauge only goes to 3/4 and drops rapidly towards empty. Somewhere between E and 1/4 is really a 1/2 tank. My questions: is there anyway to adjust without dropping the tank again? Is there a way to adjust the sender after dropping the tank or do I have the wrong or faulty sender? Thanks for any input. Steve
October 8th, 2018, 10:29 AM
#2
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Join Date: Jul 2010
Location: Toytown, MA
Posts: 1,875
I don't know of any replacement sender that's accurate. They all pretty much do what you mention. Even some "NOS" GM senders you find now do that. You can't adjust it w/o dropping the tank again. I suppose if you are electronically savvy you could put a resistor with a rheostat under the dash somehow. It's easier to drop the tank. There's a long thread about the sender probs on one of the Chevelle forums.
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