Re: temperature gauge not working
The temperature gauge connector is on top of the thermostat which is on the right hand side of the engine looking from the front. Follow the radiator top hose to the thermostat. If the connection is loose, the fuel injector light will stay on when the engine is running indicating that part of the engine monitoring system is not working properly.
Since you say that the radiator fan comes on very early, then that is worrying since mine hardly ever comes on in normal driving. If the thermostat is stuck open and there is a fault in the fan circuit which means the fan is always running then the coolant probably never gets more than lukewarm, which would explain why there is not much heat from the heater. on the other hand, there may be air in the heater matrix preventing the heater working properly even though the engine is too hot. Feel the temperature of the top hose after you have been driving for about 2-3 miles, or when the fan comes on. If it is hot then you probably have air in the system. If that is the case, get a good mechanic to check it out soon or you may risk damaging the cylinder head.
Last edited by bjrn; 09-12-06 at 22:14.