Can anyone tell me how to slove the problem of having a heater that will only blow cold air. The air is cold even when the engine has warmed up and it doesnt matter how long i drive the car for the blower never blows warm air. I have turned the control up full but to no avail.

Julie, January 2008

Are you sure that the engine has warmed up? (Check the temp gauge.) Because this fault is often caused by a coolant thermostat stuck open meaning the engine never gets to 'working' temperature and so the heater never gets hot. Alternatively it could be an airlock in the heater circuit.

t, January 2008