Air conditioning squeal?

[terryhill]

Given the sweltering heat over the past few days, I have been having the air con. Today however when put on the air con it makes a high pitched squealing noise. Anyone any theories what it could be?

Many thanks

[Northern Bongolow]

check the tension of the belt and the belt itself. or clean the pulleys, if its not been used for a while it could be covered in road crud or alternator belt dust, try a quick squirt with belt cleaner or wd or similar.

[teenmal]

Hi it could be the belt/jockey pulley or the compressor bearing.Or even the radiator fan motor bearing

Cheers.

[wonkanoby]

mine was the bearing on the pulley that tightens the belt

mazda got me a kit replaced its bearing