Alternator/Serpentine belt fitted and then Alternator goes
Alternator/Serpentine belt fitted and then Alternator goes
Author
Discussion

crazymofo

Original Poster:

24 posts

211 months

Wednesday 13th May 2009
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I had my serpentine belt replaced on my low mileage Audi as the cambelt was also being done (by Audi). 10 days later loud belt noise, and 2 days after that the alternator has packed in. I only just managed to get it to the dealer, and I am waiting for a price. Could a badly fitted belt cause the alternator to go like this?

Tame Technician

2,467 posts

234 months

Wednesday 13th May 2009
quotequote all
Whats a serpentine belt. Been in the trade 12 years never heard of it.

Assuming your mean the polly vee, ancilary drive belt, What type of car?,

On the modern vehicles, is virtually impossible to fit it wrong, they are on sprung tensioners so it impossible to over tighten them. Most probably coincidence.

Alternator free wheel pulleys fail all the time on VAG cars. IS that what failed or the alternator its self?????

Edited by Tame Technician on Wednesday 13th May 22:43

JKY

358 posts

222 months

Thursday 14th May 2009
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If they fitted the wrong part then theoreticaly it could do - some manufacturers have different part numbers with small differences in the belt length and if a smaller one is fitted by mistake then it can overload the tensioner, rollers and alternator.
If however the correct one was fitted then, as tame technician said, it is virtually impossible to fit wrong and unlikely to cause any issue to the alternator.

Coupe_Daz

387 posts

216 months

Thursday 14th May 2009
quotequote all
Tame Technician said:
Whats a serpentine belt. Been in the trade 12 years never heard of it.

Assuming your mean the polly vee, ancilary drive belt
The name serpentine belt came into use when the current range of 1.2 12v on and such engines came into play on polo etc (2002ish), blame ELSA-Win for the serpentine name, appears on there in the workshop manual section.

JKY

358 posts

222 months

Thursday 14th May 2009
quotequote all
Rover v8s have been refered to as non-serpentine or serpentine engines since they were changed to single poly belt in about 94