Horrid noise from engine on full lock

raveon · 11-09-2008, 17:42

I was wondering if anybidy else has a problem with a 1.9TDi 2004 superb which has a horrible belt noise on full lock of the power steering? If you go from lock to lock you hear a slight squeal but if you hold it on lock the noise is totally horrible. I thought this might of been a power steering pump issue and replaced it along with the belt and tensioner whilst it was stripped down that far. But the noise is still present and I've now noticed if you hold it on full lock you can actually see the power steering pump trying to lock up and makes the belt go slack. Any ideas?

Dave

rotodiesel · 11-09-2008, 19:20

Check the one way drive clutch in the alternator pulley.

rotodiesel.

martb · 14-09-2008, 21:28

Or it could be the accessory drive belt tensioner. Does it make the noise when moving or stationary? If stationary it could be the tensioner unit or the alternator pulley clutch, if moving it could be the ball joint.

Supurbia · 15-09-2008, 00:03

Does sound like a belt issue, put some talc on the belt and see if it goes away, if it doesn't it will be the pulley or the tensioner.

raveon · 16-09-2008, 19:32

I've now replaced the alternator pulley and all is perfect thank you for your help in this matter

Gizmo68 · 17-09-2008, 12:17

How much was the pulley, i assume its a dealer only part?

raveon · 17-09-2008, 17:48

The pulley was about £40 which I got from my friendly main dealer but they are available ina after market version just try any volkswagen-audi specialists just as GSF.

rotodiesel · 17-09-2008, 18:02

If you want to change the pulley you officially need two splined keys - a 3" long 12 point to hold the rotor shaft and a splined sleeve to loosen the pulley nut.

You can manage without the 12 point if you strip the alternator and put the claws in a (padded) vise, but you will need the larger splined sleeve. If you unclip the plastic cover from the pulley, you can see the splined "nut". I took an imprint with bluetack and went to the tool stores where I work, but it may not be as easy for most people. Alternator reconditioners will almost certainly have the sleeve - if you take the alternator to them they might just swap the pulleys over for the price of a beer...

It's a while since I last changed one (on a Passat) but I think they are made by INA - the bearing people.

rotodiesel.

Lummox · 17-09-2008, 18:14

I changed one today on a Passat, the tool is available from VW and isnt that expensive if your doing one yourself, i'll get the part number tomorrow.

11-09-2008, 17:42	#1
raveon Briskodian Join Date: Dec 2007 Posts: 21 Members Car: Vauxhall Zafira Thanks: 1 Thanked 2 Times in 2 Posts	Horrid noise from engine on full lock I was wondering if anybidy else has a problem with a 1.9TDi 2004 superb which has a horrible belt noise on full lock of the power steering? If you go from lock to lock you hear a slight squeal but if you hold it on lock the noise is totally horrible. I thought this might of been a power steering pump issue and replaced it along with the belt and tensioner whilst it was stripped down that far. But the noise is still present and I've now noticed if you hold it on full lock you can actually see the power steering pump trying to lock up and makes the belt go slack. Any ideas? Dave

11-09-2008, 19:20	#2
rotodiesel Briskodian Join Date: Aug 2006 Posts: 669 Members Car: Thanks: 5 Thanked 83 Times in 74 Posts	Re: Horrid noise from engine on full lock Check the one way drive clutch in the alternator pulley. rotodiesel.

14-09-2008, 21:28	#3
martb Briskodian Join Date: Aug 2008 Posts: 1 Members Car: Thanks: 0 Thanked 0 Times in 0 Posts	Re: Horrid noise from engine on full lock Or it could be the accessory drive belt tensioner. Does it make the noise when moving or stationary? If stationary it could be the tensioner unit or the alternator pulley clutch, if moving it could be the ball joint.

15-09-2008, 00:03	#4
Supurbia Briskodian Join Date: Jun 2007 Posts: 985 Members Car: Superb 1.9 TDi Auto Thanks: 2 Thanked 34 Times in 32 Posts	Re: Horrid noise from engine on full lock Does sound like a belt issue, put some talc on the belt and see if it goes away, if it doesn't it will be the pulley or the tensioner.

16-09-2008, 19:32	#5
raveon Briskodian Join Date: Dec 2007 Posts: 21 Members Car: Vauxhall Zafira Thanks: 1 Thanked 2 Times in 2 Posts	Re: Horrid noise from engine on full lock I've now replaced the alternator pulley and all is perfect thank you for your help in this matter

17-09-2008, 12:17	#6
Gizmo68 Briskodian Join Date: Dec 2004 Location: Hawkinge Kent Posts: 1,280 Members Car: Superb Comfort 1.9 TDi 130 Thanks: 16 Thanked 79 Times in 76 Posts	Re: Horrid noise from engine on full lock How much was the pulley, i assume its a dealer only part?

17-09-2008, 17:48	#7
raveon Briskodian Join Date: Dec 2007 Posts: 21 Members Car: Vauxhall Zafira Thanks: 1 Thanked 2 Times in 2 Posts	Re: Horrid noise from engine on full lock The pulley was about £40 which I got from my friendly main dealer but they are available ina after market version just try any volkswagen-audi specialists just as GSF.

17-09-2008, 18:02	#8
rotodiesel Briskodian Join Date: Aug 2006 Posts: 669 Members Car: Thanks: 5 Thanked 83 Times in 74 Posts	Re: Horrid noise from engine on full lock If you want to change the pulley you officially need two splined keys - a 3" long 12 point to hold the rotor shaft and a splined sleeve to loosen the pulley nut. You can manage without the 12 point if you strip the alternator and put the claws in a (padded) vise, but you will need the larger splined sleeve. If you unclip the plastic cover from the pulley, you can see the splined "nut". I took an imprint with bluetack and went to the tool stores where I work, but it may not be as easy for most people. Alternator reconditioners will almost certainly have the sleeve - if you take the alternator to them they might just swap the pulleys over for the price of a beer... It's a while since I last changed one (on a Passat) but I think they are made by INA - the bearing people. rotodiesel.

17-09-2008, 18:14	#9
Lummox Cupra Bush King Join Date: Sep 2003 Location: Newport Pagnell Posts: 22,430 Members Car: Mk2 Golf GTi 16v and building a 20VT MK2. Images: 2 Thanks: 22 Thanked 747 Times in 627 Posts	Re: Horrid noise from engine on full lock I changed one today on a Passat, the tool is available from VW and isnt that expensive if your doing one yourself, i'll get the part number tomorrow. __________________ www.unit18.co.uk Remapping Service now available, PM for details.

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