When does the fuel gauge drop to empty?
IF the gauge and the TAN wire from the gauge are good, the fuel gauge should immediately drop to EMPTY. (Don’t leave the key turned on for more than 5 – 10 seconds).
How do I change the temp on the fuel gauge?
Disconnect the wire from the sending unit and run a length of wire from that connector to a nice clean ground on the engine. The sending unit wire should be dark green by the way. Once again, sit in the driver’s seat and turn the key to the on position. The temp guage should immediately jump to HOT side of the gauge.
What causes fuel Guage reading to be full?
There is also a ground wire on the fuel guage sending unit which tends to get rusty and break off after a few years. If this happens, you will see the same problem – fuel guage reading full.
Why is my temperature gauge not working properly?
There is either a break in the TAN wire in the rear harness, a broken ground wire on the sending unit, (the most likely source of the problem), or a bad sending unit itself. The temperature guage is a little easier to test.
Are there any problems with the fuel gauge?
Since you have +12V to the gauges, that means that one of four problems exist for the fuel gauge and the temperature guages. (They will have to be diagnosed seperately since the problem with the fuel gauge circuit might not be the same as the problem with the temp gauge circuit.)
Disconnect the wire from the sending unit and run a length of wire from that connector to a nice clean ground on the engine. The sending unit wire should be dark green by the way. Once again, sit in the driver’s seat and turn the key to the on position. The temp guage should immediately jump to HOT side of the gauge.
There is either a break in the TAN wire in the rear harness, a broken ground wire on the sending unit, (the most likely source of the problem), or a bad sending unit itself. The temperature guage is a little easier to test.
Why does my gas Guage reading read full?
I know from experience that disconnecting the wire at the sending unit in the gas tank will cause the fuel guage to read full. There is also a ground wire on the fuel guage sending unit which tends to get rusty and break off after a few years. If this happens, you will see the same problem – fuel guage reading full.