I've just re started my Golf after 4 weeks, having renewed the whole heating system and instantly I get a loud oscillating rattle coming from around the power steering & water pump area..

It can't be the new water pump, so I backed off the tension on the power steering pump belt and it quietened down, although it still could be heard as the pump was turning..
Prior to the re-build the pump seemed fine going from lock to lock without too much squealing

Can anyone comment if this is how the buggers go.. Just been told £120 from Dub Centre
