Hi,
The heater on my 1993 Corsa 1.5TD appears to be faulty. It was fine until a couple of days ago when, once the engine had heated up, it would blow out hot air for a short while but would then start blowing warm then cool air even with the heater switch turned to maximum. Any ideas as to what it could be? I had a similar problem on a Mk2 Golf GTI, but that was down to a faulty coolant valve and was a very well known problem.
Any suggestions gratefully received.
TIA, Colin.