Belt/pulley/....noise?

justinV · Post by **justinV** » 22 Jan 2018, 01:36

Hi everyone,

Since almost 2 years, I'm the proud owner a 1996 850R wagon with 226Mkm, I really love this car and I want to keep it till the end of times!
I'm wiriting here because I have a weird belt/pulley/bearing(?) noise on cold starts, the noise completly desapears after warming up.
I found on the Internet a video of a car with the exact same noise I have (@arround 0,26sec) ...

Any thoughts?

Thanks!

Justin

Post by **wizechatmgr** » 22 Jan 2018, 02:05

Sounds like a bad bearing... In his case he had a bad belt as well...

Post by **bmdubya1198** » 22 Jan 2018, 08:52

Looks to be a bad tensioner (or another pulley) in the video. Does your timing belt walk on the pulleys like that?

Post by **jtp** » 22 Jan 2018, 18:22

If you take the belt off, or even just loosen it you could check for play in the pullies. Would be a dead giveaway.

Otherwise you can use a mechanics stethescope on each pulley and try to ID it that way (be careful the end doesn’t get caught in the moving belt).

Whichever pulley is bad I’d do a tensioner idler pulley kit while you’re in there.

justinV · Post by **justinV** » 24 Jan 2018, 02:50

Hi! , Many thanks for the suggestions! I'll dig into that once i'll finish bodywork...

but fortunately I found a donnor in a salvage yard (fingers crossed I can repair the R bumper!

C ya!

Post by **shaker_chi** » 24 Jan 2018, 10:36

A cheap trick to find out what making the noise is spraying some water on the belt while it's squealing. If the squeal goes away, you know its the belt. If it remains, then you know its a pulley. Then spray a bit of water on each pulley to determine which one it is. Now that belt moving all around like that is a different issue altogether.