Worksie 22 Report post Posted August 21, 2017 My E60 diesel has started knocking badly and it sounds to me like the sound you would get from a big end bearing knock ( a noise I am familiar with after running a big end in my MG ZT190 recently!) It is actually coming from the aircon unit/pump. I have had the aircon belt taken off, and the car is going in to be fixed soon. Has anyone else had a similar experience, and can tell me what my worst case scenario will be? I assume at the worst it will be a new aircon pump, as I don't know if those units are or can be repaired. Costings wise, is this likely to be an expensive repair? Cheers, Graeme Quote Share this post Link to post Share on other sites
