Gas gauge jumps around

[Beefcake]

Well when I got a full tank, it reads full. When I get anywhere below half a tank it jumps around everywhere. Not sure if its a short or maybe the sending unit. Anyone else have this problem?

[vanbibber]

Re: Gas gauge jumps around

welcome to fbodies, its pretty common. its usually the sending unit.

[OneEightSeven]

Re: Gas gauge jumps around

Mine has been showing full the whole time recently until its low then it shows empty. Sometimes it shows empty if i let it idle for like 5 min. Would that be the float?

[akcamaro02]

Re: Gas gauge jumps around

don't trust the gauge..just know how many miles you can go on a tank and go off that..or do what i do, don't let it get below the 1/4 mark.
1. that's better for the pump, will keep it cooler
2. you won't get stranded

[Beefcake]

Re: Gas gauge jumps around

yeah i'm just gonna wait till I need a fuel pump before trying to fix this. Its alot of work to drop the gas tank just for this.

[BallerMaro13]

Re: Gas gauge jumps around

mine does pretty much the same thing in the 3.8, but not the ls1...

the 6 will jump around all over the gauge if i'm taking a sharp turn or merging in traffic, or if the car isn't level, but the Z will stay pretty firmly where it's at. i'm used to it.

[ssms5411]

Re: Gas gauge jumps around

don't trust the gauge..just know how many miles you can go on a tank and go off that..or do what i do, don't let it get below the 1/4 mark.
1. that's better for the pump, will keep it cooler
2. you won't get stranded

X2, I noticed since I rasied my car back up to where the rear is higher than the front it reads alot better , but will stay about 3/4 mark for along time ,then drop down to 1/4 mark quickly and stay until it finally reaches the bottom empty which there is about 1 gal left when I fill up. But I watch how many miles driven mostly, when it reaches 300 mile mark I will refill.