Fuel Gauge

[ont_guy_38]

Last year was always having trouble with the fuel gauge pegging all the way past full.This year I changed tank and fuel sending unit and it worked better but still not right well now it,s pegging all the way again.It will eventually register.Seems almost like it only does this when the weather is cooler.Have checked ground and power wire they seem ok.Wondering where to start.Going to put it away soon for the winter so it's not a huge deal right now just one of them things that get under your skin.Anybody have any ideas?

[old Rusty C10]

double check the wires on the tank thats where it is 9 of 10 times usually its not good contact that is the problem

[78 Chevyrado]

Originally Posted by old Rusty C10

double check the wires on the tank thats where it is 9 of 10 times usually its not good contact that is the problem

Exactly. After checking the wiring, especially grounds, take the switch apart and clean the contacts. My 78 did the exact thing and it ended up being a ground wire (Can't remember where), and a piece of the foam that seals the switch had fell off and got in the contacts. It's really simple to rebuild the switch, just take it apart slow because there are small springs inside.