fuel gague question

[86M10086.2L]

the fuel gague on my 86 M1008 starts to sway/swing from whatever reading its at to empty or close to it whenever it gets to 1/2 tank or less each time I turn, stop, bounce, step grade etc... Now mind you it returns once the condition is over and the sweep is slow moving, but it's got me baffled. Any thoughts? Ideas? Similar problems? Is this normal?

 

[gimpyrobb]

Might be the fuel sloshing in the tank.

 

[acetomatoco]

Gauges are at the mercy of the float. When you move or bounce, the fuel surges and the float goes up and down, your gauge is dampened, so the move is not immediate, but sedate. It is normal...as the tank is long fore and aft and you get a lot of fuel movement.

 

[CCATLETT1984]

before you bother with anything else, check the ground connection for the sending unit. its on the inside of the framerail, at about the middle of the tank. it comes through a hole in the frame and there is a star washer and a bolt that secures it to the frame.

 

[d_holden]

The ground is a good spot to check. I reground mine and all fuel guage problems disappeared.

 

[AJMBLAZER]

It's a gas gauge in a Chevy truck...


...they all do that.

 

[86M10086.2L]

I'll check out the ground, I've already had a few other things fall victim to poor conections. But most likely as a few of you have stated it probably is just the nature of the beast.