I have a 1998 (S Reg) Ford Fiesta with a 1.3 engine. The heater has stopped working and only cold air comes through. I know that there is a coolant control valve in the bulk head scuttle under the bonnet so I am supposing that turning the hot/cold control knob alters the amount of hot water going through the heater matrix.
I am puzzled however by the fact that when I put a meter across the plug on the solenoid I get full voltage and this does not differ irrespective of the control knob position. It still blows cold when the plug is connected and when it is disconnected. The Haynes manual is very scant on this subject, (as they always appear to be on none engine related matters).
Can anybody help in this matter? Is it safe to assume that the valve has gone faulty or do I need to check other areas first?
Many thanks
Richard