Hello, I wonder if anybody can explain these symptoms.
The car is a 1996 Citroen AX 1.0 Dimension petrol. After about half an hour of driving the temperature warning lamp lights up. While it is lit the heater blows cold air into the cabin. There is coolant in the expansion tank. Shorting out the radiator fan switch to leave the fan permanently on while driving does not improve the situation.
Is this behaviour consistent with a faulty thermostat? Or can you think of another cause?
David.