54 a6 1.9tdi Rattling Sqealing Juddering auxiliary belt??

[Benplym]

Guys I was getting a judder and squeal on full lock when slowly manoeuvring, now it has developed into a judder when driving and turning, and the sqeal is there when I accelerate or turn when driving.

It's quite hard to diagnose as it does not do it at a complete standstill, so I would have to be lying on the bonnet with someone driving at 20 mph, probably not a good idea.

Has anyone had this? I cannot find anything anywhere about this exact thing, I even asked a local vw specialist and he cannot tell me anything due to it only being parked up when he took a look.

Thanks

 

[palfy86]

Had this on my A4 and im almost 100% its the alternator overunning pulley (oap) had that replaced and sweet as a nut again now.

Hope this helps.

 

[Benplym]

Nice one, il look into it. I just realised its 110% worse when the air on is on?

 

[palfy86]

extra strain on the alternator i guess, so yeah makes sense.

 

[AlexA4Avant]

Had the similar thing on my s40. The springs loose the tension over time so it basically bounding with the belt would change it