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Model specific boards => Golf mk3 => Topic started by: djalexr on 26 May 2011, 18:28

Title: Whiney high pitched noise at high revs
Post by: djalexr on 26 May 2011, 18:28

Hi everyone,

For as long as I can remember by Golf GTI MK3 1996 AGG has made this quite loud high pitched whiney noise when the revs get high.

You can hear it everytime you are about to change gear

Its a bit like the noise that cars sometimes make when reversing.

At first I thought it was an air leak... opened up the bonnet though and definately seems to be coming from the thing i've circled in this picture. Sometimes also makes wierd noises when the revs are on their way down too....
 
(http://www.djalexr.co.uk/SGTI1R.JPG)

Anybody have any ideas?  :smiley:

Title: Re: Whiney high pitched noise at high revs
Post by: dashey on 26 May 2011, 18:33

thats your alternator most probs the bearing gone inside it

Title: Re: Whiney high pitched noise at high revs
Post by: Khare on 26 May 2011, 18:33

It's probably the alternator belt. It's common for it to squeak with age, along with the power steering belt. It only costs a few pounds and fitting it is an easy 10-30 minute job depending on your skill.

Title: Re: Whiney high pitched noise at high revs
Post by: dansmk3 on 26 May 2011, 18:35

thats your alternator mate!!! cheap to replace and the belt is too! pick em both up from halfords, maybe even eurocarparts or gsf! as i dont really like halfords lol

Title: Re: Whiney high pitched noise at high revs
Post by: Khare on 26 May 2011, 18:45

Don't go dishing out on a new alternator just yet. It's not too common for the bearings to fail, so it'll be the belt which is a few pounds only. No point spending £70+ on a new alternator only for it to be a £5 belt...

Title: Re: Whiney high pitched noise at high revs
Post by: dashey on 26 May 2011, 18:50

Quote from: Khare on 26 May 2011, 18:45

Don't go dishing out on a new alternator just yet. It's not too common for the bearings to fail, so it'll be the belt which is a few pounds only. No point spending £70+ on a new alternator only for it to be a £5 belt...

^^^ makes sense

Title: Re: Whiney high pitched noise at high revs
Post by: dansmk3 on 26 May 2011, 18:56

yh apologies! start with the cheap fixes first!!! recently have been used to shelling out money to fix mine so could say my mind is used to replacing the whole lot!  :grin: :grin: :grin:

Title: Re: Whiney high pitched noise at high revs
Post by: stainesy on 26 May 2011, 19:41

My gti 8v whines all the time from that area. Mine is a constant whine that increases with the revs. Very noticable when driving.

Title: Re: Whiney high pitched noise at high revs
Post by: Wayne on 26 May 2011, 20:06

If it is whining it could be the belt is too tight, replace the belt as a 1st step.

Title: Re: Whiney high pitched noise at high revs
Post by: stainesy on 26 May 2011, 20:10

i need a new alternator as there is a crack all the way down the right hand side bracket for it wich must be pulling the belt tighter.

Title: Re: Whiney high pitched noise at high revs
Post by: gti gaz on 26 May 2011, 21:02

i had a prob like this changed all belts and pullys, tenchners, and that solved it dont over tighten belts though as my mate did and snapped 2 then came to me to ask why       fool!

Title: Re: Whiney high pitched noise at high revs
Post by: djalexr on 27 May 2011, 16:08

thanks for help, everyone...

does anyone have any tips for replacing the belt? Couldn't find any useful advice in the haynes...

Anything i should watch out for etc... not worth breaking anything over this noise.

Thanks

Alex

Title: Re: Whiney high pitched noise at high revs
Post by: dansmk3 on 27 May 2011, 16:22

just changing belt??

how i do mine is, remove the ribbed v belt. easiest way i found was undo the small pulley held on by 3 allan bolts and it will come off.

then on the alternator slacken off the top and bottom bolt so you can push down on the alternator and it moves. this will slacken off the belt. slip old one off new one on.

when doing alternator up, pull up on bottom of it and do the bolts up then belt should be tensioned.

then just put the other pulley back on and the ribbed belt!!!


this is how i do mine. there is prob a more "profesional way" of doing it but i like this!! lol  :grin: