Nervous fuel gauge

[bigtendude]

When I step on the gas in my truck, the fuel gauge goes to empty, when I let up on it, it searches for a spot to stop. It only stays still when I am not moving and it is accurate. Is this caused from fuel sloshing around in tanks, or is there something wrong with floats or sending units? The former owner had new aftermarket floats installed but he said that, that did not cure it. He gave me the old floats that are O.E.M, because apparently that was not the problem. I can't believe that G.M. would sell a truck with this condition, but then, it could have been a quirk that customer would have to live with ;D. I have the dual 20 gallon tanks, 1978 C10...Big 10, 350 c.ui, 350 THM trans., 3.73 gearing, 235/75R/15 tires Load range 'D'. I think that I will probably have to live with it, just pull over on long hauls to see if I need to stop for gas.. ;D

[reiners81chevy]

well usually the gauge should stay pretty still when ur going down the road. It should move a little on take off or coming to a stop. unless you've got a big right foot. it sounds like the sending unit may have a loose ground or something. I would make sur that all the conections are nice and tight and then go from there.

[bigtendude]

Thanks or the possible cause, I LOVE THIS SITE!

[Pontiac1976]

Yes that one thing as said

Posted by reiners81chevy on Yesterday at 20:41
well usually the gauge should stay pretty still when ur going down the road. It should move a little on take off or coming to a stop. unless you've got a big right foot. it sounds like the sending unit may have a loose ground or something. I would make sure that all the connections are nice and tight and then go from there.

This has been talked about a few times on the board check other post for info on the gas gauge or tanks gas tank. I have answered a few times & others too.

[BowtieGuy]

If the ground is bad all together it will make the fuel gauge read pegged way past full. So if it is the ground my guess is that its working but not good all the time. It could also be from the hot side, not getting the full voltage it needs all the time.

[Pontiac1976]

;D ;D I agree with BowtieGuy 100%