could be a fuse out
If it gets to hot the thermostat wont work. you need to repace it and the gauge will work again.
1999 subaru legacy wagon mph gauge works when it wants to what makes the gauge work? Is it a censor, fuse, wire please help
try changing the sending unit for the temp gauge
Check the daytime running light module
digital cluster may need replaced
Have you change the oil pressure sending unit, that's what I had to do. David
why doesn't my rpm gauge and temp gauge, fuel gauge not work
Jimmy Work was born in 1924.
Check for power and ground to the sending unit . If you have that then ground the sending unit and see if it works.If the gauge works then the sending unit is defective.
If the fuel gauge isn't working on a 1999 Chevrolet Blazer it could possibly be because the float is stuck in the fuel tank. I had this problem when I got my 99 blazer, the float and sensor for the fuel gauge is on the fuel pump which is in the fuel tank to keep it temperature regulated. I had to replace my fuel pump, which ended up going bad on me, and after it was replaced the gauge works just fine.
The gauge itself is in the instrument cluster; it is the sending unit that is in the tank. Between the two is wiring and a fuse which should be checked before condemning the gauge or sending unit. jb
The gauge could be bad, the fuel gauge sending unit in the gas tank as part fo the fuel pump could be bad you could have a bad ground wire you could have a broken wire in the harness runnign from the fuel tank to the gauge.