BLB balance shaft drive (2.0 tdi)

**mauricedar** · 28-12-2010,12:04 AM

I know this has been discussed before, but has any one got a definite answer from which engine no the chain drive for the balance shaft was discontinued and the gear drive used ? Any info would be appreciated. Thanks

**stevesnaz** · 28-12-2010,03:28 PM

NOT all 2006 model year cars are gear driven. The change point in production occured on the 1st September 2005. Production started for 2006 models on the 1st June 2005.

I believe the chain driven balance shaft system was only fitted to BLB and BNA engines.

**a8 tech** · 28-12-2010,03:33 PM

engine codes affected by balance shaft failure: BRD, BVF, BVA, BRE, BLB, BNA, BRF and BPW, BRC

**Crasher** · 28-12-2010,03:46 PM

The modified BLB engine was introduced at roughly chassis number WAUZZZ8E65A080172, if yours is significantly before this it will have the chain driven assembly (as long as it has not been upgraded) and after this number it should have the gear driven assembly BUT the change point is vague and so a car a few thousand cars either side of this chassis number may or may not be at risk.

**a8 tech** · 28-12-2010,03:51 PM

It depends on what was available on the day of production and in my experience the only way to confirm is sump off and not to rely on production dates of the vin as this is not the production date of the engine

R&I sump takes 2 hours but worth it as apposed to oil pump and turbo failure or even complete engine failure

**RMH1** · 28-12-2010,05:11 PM

mines on that list and I didn't think my engine code was effected .

**mauricedar** · 28-12-2010,10:47 PM

Thanks all for your replys. My vin no is about 5000 on from Crashers info so I will just have to keep my fingers crossed. I bought this car a4 2.0 tdi s line 55 reg dec 05 from Newcastle Audi when 5 mths old & intend to run it for a long time yet.

**seb1967** · 03-02-2012,11:03 AM

My Audi A4 BLB engine has just suffered the same balance shaft problem that most people seem to have been affected by. I have just started the process with Audi and their stance is still that ' it is not a known problem' . To compound this obvious design fault, Audi Canterbury have back orders for this part going back 2 months, on further investigation, TPS the parts subsidery owned by Audi have a customer who has been waiting since September 2011. My brother who lives in Germany has been told there are 2000 on back order!! To my simple mind, that seems to suggest that there may be a problem. On top of this Audi do not seem to know when this part will be available and seem to like to guess the reasons why, basically they have'nt got a clue. NOT VERY 'VORSPHRUNG DURCH TECHNIK' and very un-german of them.
I see lots of people have taken this up with Audi uk, but as their customer services rightly pointed out, Audi Uk are only importers and don't get involved in the manufacturing. Maybe our efforts should also be directed towards our german friends, this was a contact email I was given service@audi.de. I am awaiting a response and from now on I will refuse to speak to anyone bar Audi Germany. Has anyone tried to see if there are other people suffering this problem worldwide, worth searching through some international forums to see whether we can expand on this member base.

**Crasher** · 03-02-2012,06:17 PM

What yes is your car Seb?

**Alann84** · 03-02-2012,07:59 PM

Just purchased an a4 2.0 tdi and am now concerned about this with my engine , I've not had chance to have a proper look over the car mechanically as its bloody cold and I don't have a warm garage,

Is a sump R&I a fairly easy task to attend or would if be best to seek garage help , I would have to work on the drive way on jacks and stands ?

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