It may be something wrong with the car
An automobile temperature gauge can fluctuate when the thermostat is opening and closing erratically. The temperature gauge can also fluctuate when the ground wire is loose.
mostly likely something wrong with the sensor or gauge.
could be a number of things, more than likely the sensor, the wiring or the gauge itself, i'd take it to a garage then you can blame them if it goes wrong :P
add water to the radiator. believe that. if there is no water flowing through the engine, your heater will only blow cold air. if there is no water flowing through the engine and your heater is only blowing cold air, and not HEATING, your heater core is probably going out or will be soon. most people believe that if you have no water in the engine then your temperature gauge will run hot and you will know that you are overheating the engine. WRONG! your temp gauge only measures WATER temp. But if there is no water to measure, there is no temperature rise showing on the dashboard gauge. if you have NO WATER in the engine you can seriously overheat your engine and not know it because the gauge is not getting any hotter than usual (sometimes your gauge will even read cooler than usual).
If you are absolutely sure you do not have air trapped in your cooling system then you may have a defective gauge if you are getting heat through your heater. Usually I would say you have a coolant flow problem with either a stuck thermostat or a bad water pump but if you have heat from your heater, then you must have circulating coolant in your system. I would check the gauge or the sensor.
Could be temperature sensor Could be gauge
No - the gauge reports 'real-time' the engine temperature. If it is wrong, there is a problem with the sending unit on the engine. This is a pretty easy fix...
If the outside temperature gauge is not reading the right temperature on a Buick Regal, perhaps it has become damaged. It can also not read the right temperature if it is wet or covered with dirt or snow.
could be the temperature sending unit
Your check gauge light comes on if : your coolant temperature guage shows the temperature is high your oil pressure gauge shows the oil pressure is low or your fuel gauge shows the fuel tank is near empty
Possibly a leak in the coolant reservoir bottle.
Your car is starting to overheat or your thermostat is going out. Get it checked.
Either the thermostat is not working properly or the temperature sensor is displaying wrong on your gauge.
Temperature wrong, atmosphere wrong, not enough water.
Start with the fuses, then go to the more complex problems
it may be your thermostat or water pump is it over heating with steam comming out ?
If the water temperature is too hot or too cold, your fish will be stressed and may die.
it is either a temperature sensor just for the gauge or possibly a fuse, i recommend going to your local auto parts store and have them hook up their diagnostic computer to tell you the problem. its usually free!
Possible intake manifold gasket!!! Hope you have a warranty
You may need anew thermostat or the fan has stopped working.
check the connections behind the gauge they could pop loose
85cI don't know anyone who has a 90's Capri that has a temp gauge that is accurate. I have had my radiator water tested and the actual gauge is wrong. It always runs in the red in the summer. Also, the oil gauges are not correct, either. Try replacing the Themo.....I have no issues with mine
The fan is probably controlled by the temp gauge sensor that doesn't work. Check the harness for the temp sensor to see if it's getting the right voltage. Then check the temp sensor (probably a thermistor) for the proper resistance at various temperatures.WRONGThere is NO 92 Ford Escape.
yes totally wrong, see my comment