Aux belt noises - Alfa Romeo Forum
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Aux belt noises

Slightly concerned about a noise coming from the aux belt area, seems to be coming from the left hand side (as you look from the drivers side wheel), what pulleys are in this area and which one is the most likely culprit? it's worse when under load especially when the engine fan kicks in makes a slight chirping/grating noise?? is the pas pump the biggest wheel in the upper left area?
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Take you pick, apart from the bottom pulley, tensioner and idlers you have, air con compressor (lower front of the engine), power steering pump (top rear) and alternator (low rear and almost completely hidden).

If the noise gets worse when you hit the air con button the chances are it's the air con pulley.
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And if it gets worse when your electric fan kicks in, it's the alternator - underneath the PAS pump and a real pain to get at
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Originally Posted by KenSanderson View Post
And if it gets worse when your electric fan kicks in, it's the alternator - underneath the PAS pump and a real pain to get at
just what I was thinking, to be sure get some water in a spray bottle and spray waster on each pulley, when the sound disappears temporarily you have found the culprit.

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