103kW/125kw TDI PD Piezo Siemens injector failure thread

[Greg Roles]

...with pizeo injectors I believe! It's the main thing stopping me from upgrading, but hopefully they are Bosch where you can get injector parts over Siemens where you can't. I'm sure they are upgraded, but I am still wary of pizeo technology!

[Transporter]

...with pizeo injectors I believe! It's the main thing stopping me from upgrading, but hopefully they are Bosch where you can get injector parts over Siemens where you can't. I'm sure they are upgraded, but I am still wary of pizeo technology!

I know what you mean. For the similar reasons I don't want to downgrade my T5 to the new T5 4 cyl twin turbo, because so far I didn't have any real failures. The new is not always upgrade to me.

Hopefully your injectors won't brake down.

[kaanage]

Greg, I thought you said that the CR injectors were OK, even if they use Piezo-Electric actuation, because the injector and loom aren't immersed in engine oil, which the PD injectors need to be.

[poyta]

Hm, I think that so far there is no one who is too much out of pocket when the injectors failed. At least in our forum and if there would be someone, cold you please direct him to post his details in this thread: http://www.vwwatercooled.org.au/f28/...tml#post624276

Mark my words I'll be "that guy" when/if my injectors go - if my track record of getting things replaced under warranty are anything to go by.

[Greg Roles]

Greg, I thought you said that the CR injectors were OK, even if they use Piezo-Electric actuation, because the injector and loom aren't immersed in engine oil, which the PD injectors need to be.

Good point mate, but oil seems to be hardening the plastic insulation on the loom ( as you expect from long term oil immersion ) whereas the Pizeo component insulation seems to be more an internal design flaw. The parts theorised to fail thus far are totally sealed within insulation, and it would appear oil has no role in the actual injector failure from current facts available.

I'd think the new CR has better injectors, and the fact they have gone back to Bosh ( with all the spares ) is a good move, and that combined with a second generation DPF makes for a much improved diesel experience, but I'm still not sold on Pizeo technology until the failure mode is revealed.

[Greg Roles]

From yet another thread full of failure, some hard facts at last!!!

A3 TDI PD injector loom issues - Audi Mag | VAGOC.co.uk

NEW improved loom 03G971033L @£82.28
injector 03G130073TX @£556

Old part numbers, just so you can cross reference, this info came from Audi Hatfield.
loom 03G971033D
injector 03G130073MX

The old loom: Part number suffix 'D' dropped on 01/04/2008 and changed to suffx 'L' according to ETKA.

[benough]

I'll have to check my invoice from my injectors and see if the part numbers match.

[poyta]

So if there's an improved loom out there why doesn't VW just do a recall to have them replaced and avoid any potential future issues? Surely the recent reported problems is hurting their reliability reputation?

[stickshift3000]

So if there's an improved loom out there why doesn't VW just do a recall to have them replaced and avoid any potential future issues? Surely the recent reported problems is hurting their reliability reputation?

I deal with recalls on a daily basis, but sadly, until there's a serious injury or the ACCC gets wind of the seriousness of the issue (hint) it's unlikely that a recall will be voluntarily be conducted by vw.

A recall wil hurt their rep way more than not conducting one... don't forget it hurts their bottom line even more, they are a business after all.

[Halcyon]

I've read most of this thread, but haven't seen the answer to this: do the TDI common rail motors have the same injectors (Siemens) that were giving trouble and if so do they still give trouble?