Originally Posted by
Jasoncmor
Cheers, I did small tests before thinking I had a head gasket problem.
I checked the exhuast, no white smoke coming out, or any sweet smells, no coolant in teh oil or on the lid, no loss of coolant. So ruled that out, but obviously need specific tools for that.
Last thing I want to do it throw even more money at my car after other work i've done, and for it not to be fixed.
I don't think it is head gasket. I tend to agree with Mechanic - heater control valve but could also be the thermostat or blocked heater matrix.