Back in for some update on the hesitations - irratic idle - misfires.
The issue changed from been intermittant to constant; with the addition of the rattling noise on the left side of the engine (where the chains are located) . After a full specialist diagnostic which indicated stretch chains, I had the timing chains kit replaced .
Once all put back together : still the same !!!! except from the rattling noise .
So the is still in the garage, the "cyclone oil separetor" has been replaced (althought it was in working order), the next step is to replace the camshafts adjusters (which are not cheap) and the associated sensors as good measures .
With all fingers crossed, I certainly hope that this will cure the issues as I don t know what else I could do more.
Big lumps of money spent on the car but should well worth it if it last .
I ll keep posting the update .
Yup. My dealer couldnt or didnt want to make the update. The hesitation became present at iddle all the times after i decided to try with some oil additive to clean the engine. Then i tried to gently hit the cam sensor N205 and the engine worked fine again for like 5 secs. I'm guessing that the sensor is somehow clogged. I've been running with that sensor disconnected for the past 10.000km . Car runs fine, idles fine but the hesitation around 2k rpm and the exaggerated fuel consumption is still present.
Thing is i have to remove all the front of the car and valve cover, and might even have to take the cylinder head apart to change that stupid sensor?
In order to replace the sensor the cover and the side cover by the adjusters need removing as the bolts are in the inside , which is the reason why desicion was made to replace the sensors even though they showing as fine on the diagnostic . Better that than to end up with a faulty sensors few weeks down the road.
It seems that all these issues are partly due to the long life oil service option . My car was on long life oil for the first 50k miles (serviced by Audi) then on standard oil change & issues started at 60-65k miles I think. Has anyone with the issue never ran with the long life oil service ??
Thank you! I have vcds myself so I'll check that, I've already scanned for codes - non present - but didn' t check the ecu or software code as I didn't realise an update even existed.I think in general dealers are reluctant to do the update and will usually tell you a diagnostic is required first and following that, an update is not available.
They are a law unto themselves tbh and not helpful in most cases.
In the first instance can you get a scan done by a friendly member on here to find out what software is currently on the ECU and then you have a benchmark to start from
I wish you luck
Thank you to everyone on here for all of the information, I went in to Exeter Audi well armed with the correct numbers and data and with very little argument I'm now booked in for the update! Cheers
@WrightClick you'll probably want to get your ECU software version checked then if there is a relevant update needed then book in with Audi, otherwise you'll probably have to pay for diagnostics and Audi BS ! (I struggled to get Audi to agree to do this so went private)
If you have a VDCS member near you I would advise having them scan your car and check the version, or even better if your attending 'Audi's in the Park' @DJAlix from "VAG Car Coding' will be able to wave his magic over it for sure.
Muswell Hill, North LondonI spoke to Exeter Audi, gave them the TPI number and they said that it wasn't relevant to my car. The best they could do would be to book it in for diagnostics (sounds familiar) and go from there, but they couldn't fit me in until September!
I'm actually going to be up near London at the beginning of September. Whereabouts is @DJAlix located?
Not a mechanic so I cannot say 100% about any physical problems other than what I have experienced while performing updates. Personally I always suggest the software update route first as it tends to be the fastest a cheapest way to start a process of elimination. For your ECU the most up to date file is: 8036.