COuld be a number of things. check out the temp sending unit , check for a faulty thermostat, could be a broken or loose wire from the sending unit. these are the things I would check first.
oldtom
temperature gauge not working can be caused by a bad temp sensor in engine, a bad gauge in dash, or a bad fuse
no you need to replace temperature sinding unit
The temperature sensor is malfunctioning
If you temperature gauge is going up and down then you may have a problem with your sensor. You should take your car to a professional to ensure that you don't overheat your car.
because the engine in that car does not cool down
Coolant Temperature Sensor
yes... because you gonna loose water..
Could be your thermostat or your anti-freeze
A low coolant level could cause the temp gauge not to read correctly. A faulty temp gauge sending unit could also be the cause. The coolant leak, you would have to find the source of the leak to determine the cause.
Check the temperature sensor.
What are you talking about? My temperature gauge works fine. Though, if it wasn't I would check the temperature sending unit.
only if running the air.