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VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #

Posted by Mark Robins on November 6, 2014, 11:02 am

Year of Manufacture *: 2009 -
Engine Size and Code *: 2.0cc
( Optional ) Scanner Used: VAGCOM

Hello Gents,

Having quite a few of these in with intermittent negative boost deviation errors, if you look at the Turbo actuator it seems to be moving correctly but if you "T" in a vacuum gauge you will see low vacuum because of a leaking diaphragm. Our supplier keep loads on the shelf so it must be quite common, so look out for this one.

Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #

Posted by Craig Thompson <iframe src='https://members.boardhost.com/ukautotalk11/info/user=ukat3722' width='330' height='300' border=0 style='border:none;'> on November 12, 2014, 9:04 pm, in reply to "VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #"

Hi Mark, yip seen this one before, however never replaced the actuator (having been told You need specialised equipment to Set variable vane turbos). What kind of job is it?

Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #

Posted by Chris Angus <iframe src='https://members.boardhost.com/ukautotalk11/info/user=UKAT5111' width='330' height='300' border=0 style='border:none;'> on November 13, 2014, 3:40 pm, in reply to "Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #"

I've done a few of these now, it's fairly straight forward, there is a setting procedure but simple enough, just need a mitty vac to set the rod length while checking live data.
If you set the rod at the same length as the old one it's very close.

Chris

Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #

Posted by Craig Thompson <iframe src='https://members.boardhost.com/ukautotalk11/info/user=ukat3722' width='330' height='300' border=0 style='border:none;'> on November 14, 2014, 6:50 pm, in reply to "VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #"

Great, could you post the procedure?

Regards

Craig

Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #

Posted by steve sims <iframe src='https://members.boardhost.com/ukautotalk11/info/user=ukat3769' width='330' height='300' border=0 style='border:none;'> on November 18, 2014, 1:26 pm, in reply to "Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #"
Steven Sims

Done a few myself, got this off someone else, it might help you out

this can be fitted in situ, repair kit is available from VAG.

VW dealer quotes 3 hours for the job, first one will possibly take you that - I'm currently doing them in around 1 hour.

Place a rag under the turbo to catch dropped spanners / nuts.
Remove top of air filter housing, remove inlet trunking complete with bolt on angled connector piece to turbo inlet. Place blanking plug on turbo & rag under turbo, climb onto the slam panel & make yourself cosy, undo the 3 x bolts holding the turbo actuator in place ( a bit of slight manouvering of the oil feed pipe with a lever may be necessary).
Drag the turbo actuator upwards and lodge it on the turbo casing, find a long 10mm open ender & release top locknut, spend the next 10 mins cursing the idiot who used loctite on the bottom nut as you undo it whilst dropping spanner / socket into catch rag (& thanking me for telling you to place a rag under the turbo to catch droppages as you get w*ankers cramp).

Match the height of the top nut on the new unit with the old one using a vernier caliper, fit new unit - winding bottom nut up to top nut & locking in place, bolt actuator on with one bolt.

Turn ignition on and go to Engine Group 120, Dynamic 4 - this should be reading between 3.4 & 3.9V with ignition on engine off ( no vacuum ).
Using a Mityvac, vac the unit up to the maximum position - the reading in Group 120 Dynamic 4 should now read 0.76V - this is the important one, if it isn't reading 0.76 - slacken unit off & adjust until it does.

Once setup there is a basic setting to be carried out at 80C in control unit functions, this operates & stores the values for the actuator - if it doesn't attain the correct values it will log a boost position sender limit not reached DTC

Regards

Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #

Posted by Craig Thompson <iframe src='https://members.boardhost.com/ukautotalk11/info/user=ukat3722' width='330' height='300' border=0 style='border:none;'> on November 18, 2014, 6:17 pm, in reply to "Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #"

Thanks very much Steve it's much appreciated

Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #

Posted by Glen Strachan <iframe src='https://members.boardhost.com/ukautotalk11/info/user=ukat1463' width='330' height='300' border=0 style='border:none;'> on November 25, 2014, 5:23 pm, in reply to "Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #"

does anyone have a part number for the repair kit ?

Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #

Posted by Glyn Morgan <iframe src='https://members.boardhost.com/ukautotalk11/info/user=UKAT2543' width='330' height='300' border=0 style='border:none;'> on November 26, 2014, 11:10 am, in reply to "Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #"
Glyn Morgan

We have fitted 03L198716A to a couple

Regards Glyn

Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #

Posted by John Greystrong <iframe src='https://members.boardhost.com/ukautotalk11/info/user=ukat3218' width='330' height='300' border=0 style='border:none;'> on November 26, 2014, 11:26 am, in reply to "Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #"
John Greystrong

That's the same part number I've used. Not a bad job, just meant sacrificing a 10mm spanner that had to be bent to tighten the locknut.

Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #

Posted by Mark Robins <iframe src='https://members.boardhost.com/ukautotalk11/info/user=ukat3563' width='330' height='300' border=0 style='border:none;'> on December 1, 2014, 5:59 pm, in reply to "Re: VW Passat 2.0 CRD 2009 - Intermittent negative boost deviation - Fixed #"
Mark Robins

I guess all the questions have been answered, we just measured the length from the lock nut and carried it over to the new unit. As has been said it's a little tight but a bit of perseverance and you'll get there. We got the new unit from TPS.

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