MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: john87 on July 08, 2014, 07:15:13 pm

Title: Squealing 3.2 V6 - Any ideas?
Post by: john87 on July 08, 2014, 07:15:13 pm
After finally getting my Haldex/Final drive unit replaced under warranty, my humble Golf decides to throw yet another odd noise at me  :fighting:

Does anyone have a clue what this could be? It happens when the engine's idling (once fully warmed up) and seems to be coming from the aux. belt area. I'm thinking bearings in the idler pulley or one of the other pullies in that region?

https://www.youtube.com/watch?v=xgR50V8RuDg (https://www.youtube.com/watch?v=xgR50V8RuDg)
Title: Re: Squealing 3.2 V6 - Any ideas?
Post by: RoMocop on July 08, 2014, 08:31:14 pm
You could have a look at this link. i think this could help you. :happy2:

http://www.mk5golfgti.co.uk/forum/index.php?topic=25707.0
Title: Re: Squealing 3.2 V6 - Any ideas?
Post by: john87 on July 18, 2014, 12:19:07 pm
I've done a bit of 'probing' under the bonnet with a listening stick, and it would seem that the aux. belt tensioner has a nackered bearing.. booked her back into VW to see if it will be covered by the extended warranty  :happy2:
Title: Re: Squealing 3.2 V6 - Any ideas?
Post by: john87 on July 24, 2014, 09:55:37 am
*Update*

Car went into VW dealer on Monday and was diagnosed with a failing water pump bearing... replaced under warranty, problem solved!  :happy2:
Title: Re: Squealing 3.2 V6 - Any ideas?
Post by: Redemption on July 24, 2014, 08:07:12 pm
Out of curiosity. Did the noise disappear when you revved the engine and then slowly come back after idling for a while?
Title: Re: Squealing 3.2 V6 - Any ideas?
Post by: john87 on July 24, 2014, 11:05:27 pm
Quote from: Redemption on July 24, 2014, 08:07:12 pm
Out of curiosity. Did the noise disappear when you revved the engine and then slowly come back after idling for a while?

Yes! This is exactly what used to happen.. also, it only did it when warmed up/driven for more than 10 minutes.
Title: Re: Squealing 3.2 V6 - Any ideas?
Post by: Redemption on July 25, 2014, 07:29:43 am
Quote from: john87 on July 24, 2014, 11:05:27 pm
Quote from: Redemption on July 24, 2014, 08:07:12 pm
Out of curiosity. Did the noise disappear when you revved the engine and then slowly come back after idling for a while?

Yes! This is exactly what used to happen.. also, it only did it when warmed up/driven for more than 10 minutes.

My R32 started making this noise yesterday. Another thing to add to the list.
Title: Re: Squealing 3.2 V6 - Any ideas?
Post by: john87 on July 25, 2014, 10:01:14 am
Just so you know, mines is a 2009/58 plate with just over 54k. The guy at the service desk said he thought it wasn't terribly low mileage for a water pump to fail, modern cars for you eh  :indifferent:
Title: Re: Squealing 3.2 V6 - Any ideas?
Post by: Redemption on July 25, 2014, 02:28:59 pm
Mine's a 2007 with 71000 miles. Seems to be the mileage where things are starting to fail/break.