Hi, can anyone help me. I have got an airlock that is stopping the heat coming through in my car - so the mechanic told me. I had a new part fitted - cant remember what its called - to resolve the problem of having no heat - at a cost of £48 - and still got none because of this airlock. Not happy and very cold!

How sure are you its an airlock? Was the part fitted a Heater Control Valve? Thats the usual problem. The one he fitted may be faulty.

If you have an air lock the engine is likely to overheat. If it is the HCV, you need to get someone with an electrical tester to ensure power is going to it as it could be the control panel that is behind the heater control knob in the dash that has gone.