Hi Buddies, Ive developed a quite loud whirring noise which seems to be coming from around the A/C Compressor. It doesn't change if A/C is on or off, but does go up and down in pitch with engine revs.Cant see anything else nearby that could cause it.I know its a long shot when you cant hear it yourselves, but any suggestions would be greatly appreciated.Sounds a little bit like when we used

 

to put a bit of cardboard through pushbike spokes to sound like a motorbike.:D

Thanks Guys.:bow:

loose belt?

Noisy Injectors or sticky lifters perhaps? When was your last Oil change??Cover the car up at night??

Oil change 500 ago. Have searched on here and seems it is most likely A/C belt tensioner pulley.I'll be really chuffed if thats all it is. Thanks for your help anyway.Cheers Maz. :duffer:

No worries :D Just rip the whole AC unit out! Never hot enough in this country anyways plus saves you 20kgs :D

if it sounds like what you describe then its possibly viscous van? I had a duff blade on mine which flexed too much and would skim along the wiring for the coolant temp sensor etc. Worth checking anyway.

Sounds like AC compressor to me

There is a tensioner pulley for the aircon belt , my bearing went in this and it gave a metallic rattle / whirring noise , very easy to replace , drop the belt off and you can spin it by hand and feel whether the bearing,s pooped . HTH

Thanks lads. It is the tensioning pulley. Costs £19. Job being done next week.Thanks again for your help.:bow: