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VW Passat B5 belt noise

19096 Views 26 Replies 10 Participants Last post by  Wahobbert
Hi Guys,

Once again having issues with my Passat. Around 6 months ago my Passat began making weird high pitch noise coming fro the engine, it was the drive belt and it only happen rarely but as time went it would happen more often. Usually while engine is cold once warmed up it would go away. Now it stays even if the engine is hot.

The noise itself sound high pitch and pulsing and quite loud, you could say it's like a squeal.

I think it's coming from the area I have highlighted in the image.

Any suggestions?
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The serp belts tend to be pretty quiet, unlike V-belts, which have a lot of friction which causes the noise. You can try changing the belt, but if you do, I'd start the engine with the belt off and make sure that you don't still hear the noise. If you do, don't run it any more untill the whole timing belt system is checked out. If you determine the noise has to come from the serp belt, check the tensioner to be sure the roller turns smoothly, and the tensioner spring is holding the roller tightly against the back of the belt.
The belt removes without service position. You might get the tensioner out without moving the front-end, but it's tight. I can do it on my A4, but reaching the large socket-head bolt is not easy.
Looks like I assumed he had a V6, and you are right, if a 1.8T, the job takes three easy bolts and no front-end service position trouble.
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