2.5 tdi 2005 a4 injector pump issue?

[tregz544]

hi all
not sure if mine is a b6 or b7 to be honest hope this is the right place to post.
ive recently brought this car as a non starter.


the pump was sent to ecutesting by the previous owner who worked their magic on the ecu and apparently repaired the fault they found.


however there still seems to be an issue as the car will still not start.


after researching on the internet I managed to find the settings in vcds to show the voltage at the pump but the first field was 0 and the second field was 11.5v (battery is now on charge)


I assume this means the pump has no power??


thing is when I removed the electrical connector I found that 2 of the pins had a live feed???


I believe the pump still needs to be coded to the immobilizer but im guessing this will not happen with no power......


im confused? is it possible that the pump is still faulty?


any help appreciated on this head scratcher!!

[tregz544]

After looking closely in vcds it is apparent that in the engine module, the vin and immo Id is displayed as xxxxxxxx . Also there is no login confirmation from the ecu either. Is it likely that the ecu is the problem here?


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[kite]

You need to speak to adamss24 ( Chris) he know these engines.
Look on here for his posts, you should find his phone number on there.

[tregz544]

Can't pm at the moment, would someone be able to pm him for me?


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[kite]

Can't pm at the moment, would someone be able to pm him for me?


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I've sent you a PM..

[tregz544]

Thanks for that...kite.
Update......the ecu was sent away to be tested and apparently it's not repairable.
I'm edging towards swapping it for a used ecu as the new one is over £400.
I'm quite good with computers so I'm guessing it shouldn't be too bad.
I have the skc. I just need a process for swapping everything over? Is vag commander suitable?


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[kite]

I have no idea what you need to change over the ECU. Where did you send it for testing ?
Diesel Bob seems to have a good rep with VP44's.

[abyrne153]

The ecu for the vp44 is calibrated using specialised equipment and matched to each pump. Once an immobiliser is matched to an edc you need both the pin code and key from the donor car to recode it to another. This is usually not practical. The only real option is to send the pump off to be reconditioned which will include fitting a brand new edc that will come open for a new pin code that can be extracted from your cars engine ecu using a super vag k+can tool and matched to your car following the instructions on the Ross tech website and a full version of vagcom. The pumps are so precise that often a repaired original edc will cause running issues, smoky starts, rough running etc. There is no real option but to bite the bullet and get your pump reconditioned by a specialist.

[tregz544]

Finally managed to get this car started. The problem was that someone had attempted a bodged repair before I brought the car and had the wrong pump on the car?? Anyway I managed to sort the correct pump and it's all fitted and starts.
I have attempted to set the pump timing with vcds and have it set very close to the blue line in the middle but it's still running like a tractor...and loads of white smoke from the exhaust...
The tensioner on the belt is a little tight so I'm going to readjust asap....would that cause such bad smoking and running?


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[abyrne153]

Check and see if any fault codes are being thrown up. Did you check the static timing with the proper locking tools? If all is ok then check your egr valve which could be stuck open. These engines run better with the pump timing a bit advanced so try and get it towards the upper line. Go as advanced as possible so long as the pump isn;t generating fault codes.