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.
Where is the temp Guage and electic fan sending unit?
Installed the temp sender for gauge where the original one was installed on the driver’s side head. I also have A/C, so I installed a diode in the power lead to the fans to keep the current from “back flowing” to the relay when the A/C is turned on.
What to do when temperature gauge reads high?
If the gauge reads high when the engine is cold and the ignition is switched on, disconnect the temperature sending unit wire from the sending unit. If the needle drops to a lower reading, the sending unit is faulty. If the needle does not drop, the wire or the gauge is shorted to ground.
Where is the temp sending unit on a car?
The temp sending unit is located on the intake manifold on the top left front right near the thermostat housing. 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.
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.
What’s the best way to wire a temperature gauge?
Strip both ends of the wire, which will be the ground wire. Crimp two wire eyelets to each end of the ground wire. Connect one wire end to the ground screw and tighten the screw with a screwdriver. Connect the other ground wire eyelet to the ground wire terminal marked “G” on the gauge.
The temp sending unit is located on the intake manifold on the top left front right near the thermostat housing. 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.
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.