enuff_zed said:Hopefully it is due to the air in the system, but the cooling fan constantly running is often the first sign that the pump is on its way out.
Get the mechanic to code read the engine control system and look for pump codes.
My thoughts too.
Get a Pierburg pump and a Mahle thermostat from autodoc for around £300.
Few of us have done these if you'd rather ask someone who actually knows what they are talking about. :roll: