64 gas gauge needle goes left when brake pedal applied

[John F.]

Is this a grounding problem somewhere?

[Edward J.]

Re: 64 gas gauge needle goes left when brake pedal applied

John some movement was normal on midyears, the tanks were not baffled very well and the gasoline tends to make the gauge move around over bumps and cornering. I have the same issue with my 63 and tried everything, including cleaning ground at tank.

[John F.]

Re: 64 gas gauge needle goes left when brake pedal applied

Ed, this is with the car sitting still. You press on the brake and the needle goes left.

[Stephen L.]

Re: 64 gas gauge needle goes left when brake pedal applied

How far does the needle deflect......

[Edward J.]

Re: 64 gas gauge needle goes left when brake pedal applied

John check the ground at tank sender (they get rusty), maybe sourcing a nearby ground from the rear brake light bulbs. I have seen strange things happen with corvette grounds. Also check the brake lights rear and make sure there are all lite the same brightness.

[Roy S.]

Re: 64 gas gauge needle goes left when brake pedal applied

Ed, this is with the car sitting still. You press on the brake and the needle goes left.

I believe you will find the gauge is not actually functioning because of poor ground, until you depress the brake pedal and it is then as mentioned earlier receiving a ground through the brake light circuit. Does the gauge read a 1/2 tank regardless of the amount of fuel in the tank?

[John F.]

Re: 64 gas gauge needle goes left when brake pedal applied

Roy, Stays on 1/2 full and then goes left.

[Edward J.]

Re: 64 gas gauge needle goes left when brake pedal applied

john, let us know how you make out. thanks Ed