Yet more problems... So after driving around for probably around 1-30mins, as I was driving home I noticed a high pitch squealing noise, so when I parked up and had a look at engine bay it seemed to be coming from the left side but not 100% sure, what could this sound be? It doesn't seem to be any of the belts, all I can think of is the water pump. (The timing belt was last done around 2009 I think at 70k, so it is due.) Any help appreciated. Cheers.