This has probably been mentioned here before, but i cant find a topic on it so forgive me if there is. I am having problems with my temperature guage, it works fine sometimes then other times it drops to 0 and back up to the middle after a while. Sometimes if it is stuck at 0 shutting off the ignition and restarting brings it back to life. I have replaced the coolant temperature sensor and also the thermostat along with the top of the housing. Now that still hasnt solved the problem so I am thinking that the coolant temperature sensor doesnt send the readingto the dial, is there another sensor in the housing that i am missing perhaps?

Edited 16 March, 201016 yr by markc2511

Probably a bad connection between sensor and dash panel insert. Code scan may state which module is having comms problem.

Probably a bad connection between sensor and dash panel insert. Code scan may state which module is having comms problem.

Cheers mate, have to take it to the mechanic for a seperate problem tomorrow will mention this to him. Do you reckon that the coolant temperature sensor relays the temperature to the dial?

Cheers mate, have to take it to the mechanic for a seperate problem tomorrow will mention this to him. Do you reckon that the coolant temperature sensor relays the temperature to the dial?

In a way yes. The temp sensor is just a positive co-efficient resistor, the value varies with temperature. This resistance is read by a chip on the dash panel, and converted into a voltage value to drive the temp gauge. These faults will often clear if you simply unplug the dash panel multi-plug and refit it.

In a way yes. The temp sensor is just a positive co-efficient resistor, the value varies with temperature. This resistance is read by a chip on the dash panel, and converted into a voltage value to drive the temp gauge. These faults will often clear if you simply unplug the dash panel multi-plug and refit it.

Thank you moggytech you were spot on! Its working fine now