it can be one of three things . a fuse , gauge, or sender. try puting a loop wire in the connector that goes to the switch on the thermostat housing do not reconnect until you turn on the ignition if the gauge now works then the problem is the sender . if it dos not then take loop wire out and reconnect . now find the fuse that supports the temp gauge and make sure its ok. if it still does not work its the gauge voltage regulator so the gauge will have to be replaced. hope this is of help kiffie
It sounds like a bad Temperature Sensor or the Gage It's self.
It is possible that the temperature gauge has stopped working in a 1992 Tempo due to a blown fuse. It is also possible that the temperature gauge stopped working do to the temperature sensor in the engine having a short.
An inoperative temperature gauge will not alter how an engine runs, but the operator will not know if the water temperature has risen above normal without a properly working guage.
Low Coolant? Weak Temerature sensor? Weak gauge Gauge working properly and recording the thermostat opening and closing as engine temperature fluctuates
It could be a faulty gauge, a faulty sensor, or a wiring problem. What engine do you have in what year car?
Possible causes of gauge not working. Faulty gauge Blown fuse. Open circuit in wiring to the gauge. Temprature transmitter in engine faulty. ( most probably the actual fault ) Lack of coolant in the engine.
temperature gauge not working can be caused by a bad temp sensor in engine, a bad gauge in dash, or a bad fuse
try replacing the thermostat
Check the temperature sensor.
One sensor would be for your engine temperature gauge and the other sensor for the OBD II engine management system
The temperature sensor is probably bad
Temperature gauge not moved and the fan's always are working