Fuel gauge moving erratically help! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Boog** · 12-10-2012, 10:49 PM

This is timely in that just yesterday on MotorWeek tv the garage segment was about fluctuating fuel gauges. While some sending units do go bad and some electrical connections are the root of the problem they said the fuel can also be the cause of the condition. High sulfur content of some fuel causes corrosion on the reostat. I forgot what product he suggested trying before diving into a pump assembly replacement. Lots cheaper and easier to try it first. I bet a search would turn up a brand.

12-10-2012, 10:49 PM	#15
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 14,116	Re: Fuel gauge moving erratically help! This is timely in that just yesterday on MotorWeek tv the garage segment was about fluctuating fuel gauges. While some sending units do go bad and some electrical connections are the root of the problem they said the fuel can also be the cause of the condition. High sulfur content of some fuel causes corrosion on the reostat. I forgot what product he suggested trying before diving into a pump assembly replacement. Lots cheaper and easier to try it first. I bet a search would turn up a brand. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver 'primer is finer' Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

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