I have a Ford Fiesta 2002 old shape, the heater is constantly on hot regardless of the position of the temp control in the car. I had a new valve fitted by a garage which seemed to work for a week or two but then back to hot all the time. So I replaced the valve myself but it made no difference. Any ideas???

Neil, September 2009

Thanks John, how do you replace the switch? I cant figure out how to get at it.

neil, September 2009

Two faulty bits on these...the electric valve, and the switch itself. You seem to have isolated one of them.....

John, September 2009