VWDiesel.net The IDI, TDI, and mTDI source.

General Information => Troubleshooting => Topic started by: jettabrendan on April 17, 2009, 08:35:48 pm

Title: alternator squealing
Post by: jettabrendan on April 17, 2009, 08:35:48 pm

new belt, new alternator, same old irritating and embarrassing shreaking sound coming from under the hood. When i put a load on the alternator like a/c or even heat it starts. worse when its wet. Besides the hard to find splash guard, what other alternatives does one have to cover it all up?

Title: alternator squealing
Post by: subsonic on April 17, 2009, 10:12:07 pm

Which car is it on?

Title: alternator squealing
Post by: jettabrendan on April 17, 2009, 10:32:16 pm

1991 and 92 td's

Title: alternator squealing
Post by: 8v-of-fury on April 17, 2009, 11:49:59 pm

What amp alt's? 65 or 90?

Title: alternator squealing
Post by: Patrick on April 18, 2009, 03:12:29 am

V belt is slipping on the alternator, I get it on a regular basis. You can try taking some sandpaper or emery cloth to the pulley (with the alternator out of the car). Pulley should come off the alternator in two pieces....... Too much wear, probably should have a new pulley.

Title: alternator squealing
Post by: Smokey Eddy on April 18, 2009, 03:16:56 am

Has anyone roughed up the pulley with emery cloth and not shredded the belt?

ps. is this in the correct section...

Title: alternator squealing
Post by: burn_your_money on April 18, 2009, 06:42:29 am

Quote from: "Smokey Eddy"

ps. is this in the correct section...

It is now.

Title: alternator squealing
Post by: 8v-of-fury on April 18, 2009, 08:49:43 am

are you sure the belt has enough tension? i just replaced the belt and it was a tad bit smaller and it fits on real tight like. My car used to squeal ALL the time dry or wet :( it was embarrasing

Title: alternator squealing
Post by: jettabrendan on April 18, 2009, 10:34:00 am

Yeah the belt is tight it squeals even when I first start it and even if its bone dry.

Title: alternator squealing
Post by: jettabrendan on April 18, 2009, 10:35:50 am

I have air so it should be a 90 amp

Title: alternator squealing
Post by: Smokey Eddy on April 18, 2009, 01:51:57 pm

Mine is starting to squeal to! I just replaced it last week!!!

I think it's just loose. Belts stretch over time.

Is your belt all smooth and shiny?

Title: alternator squealing
Post by: jettabrendan on April 18, 2009, 03:13:18 pm

Nope its brand new same as the alternator

Title: alternator squealing
Post by: theman53 on April 18, 2009, 05:18:42 pm

http://www.vwdieselparts.com/forum/viewtopic.php?t=8173&highlight=belt+tensioner

check out that link...I am doing that with my new turbo engine as soon as it is in. I started it already with the N/A. I replaced the bearing, retightened, sanded, etc and the thing would never stop squeeling. I had everything off the front of the engine put it all back on after inspecting and cleaning and it still did it....right now I have a metal piece with 2 small roller bearings on one end and a hole in the other just like the guy above. I think I even posted in that thread a couple of times when I started to make that piece.

Title: alternator squealing
Post by: jettabrendan on April 26, 2009, 04:41:17 pm

i wonder if getting a new alt pulley will solve it?

Title: alternator squealing
Post by: 8v-of-fury on April 26, 2009, 06:09:55 pm

but you already got one when you got a new alt no? or did u have to use your old one?

Title: Re: alternator squealing
Post by: Smokey Eddy on May 23, 2009, 12:39:00 am

Hey i just fixed my squeeling. I roughed up all the pulleys with emery cloth and a file. I then replaced the bolt that had a cog like washer i guess? on it.. it was supposed to pull the ALT. up a toothed track to tighten the belt...
I just got a normal bolt. Pulled up as hard as i could on the ALT and then tightened the bolt down. Been 500km and hasn't squeeked a peep!