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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: Zeked on November 02, 2009, 05:31:51 pm

Title: 87 c10 fuel gauge wiggles....
Post by: Zeked on November 02, 2009, 05:31:51 pm

My 87 short/step has a problem with the fuel gauge... the thing wiggles!  Both tanks, and it reads correctly when the truck is still.

As I drive it bounces.... does not matter the amount of fuel in the tank(s).    Is there a resistor on the printed circuit plastic that should dampen this behavior?

Thanks

Zeke

Title: Re: 87 c10 fuel gauge wiggles....
Post by: Marc on November 02, 2009, 05:34:28 pm

Most older GM products I have had do this...I've always chalked it up to the gauge design, which isn't a slow-reacting thermal type...it uses some sort of magnet affair.

Title: Re: 87 c10 fuel gauge wiggles....
Post by: emr_09 on November 10, 2009, 07:14:14 pm

Mine do this to and I have always wondered what causes it. I wonder if the aftermarket tanks dont have baffles in them or something to keep the fuel from slashing around

Title: Re: 87 c10 fuel gauge wiggles....
Post by: Captkaos on November 10, 2009, 07:27:50 pm

It is the design of the sending unit that causes it to float around.