Hi i have posted this in clubpolo and got some good responses but wanted to also check on here for some of your expert opinions.
Recently my heater has been going from hot to cold then back to hot for a few mins then to cold.
Now it constantly blows cold and on the way home the other day it overheated?
Any ideas what this could be due to?
I have changed the thermostat, although not driving since, i tested the old on in a pan of hot water and the thermostat was working fully before boiling point, opening fully.
People have said waterpump
other said head gasket
others said air in the system.
i havent drove it since it over heated just incase it was head gasket.
just wondering if i could find a way of diangosing it before actually taking things to pieces.
Thanks
Rich