[ToeRagV10]

Hi,

got 2005 V10, had in from 3000km. It has always "fluffed" between 1000 and 1500rpm but otherrwise goes like a rocket.

VW said it was protection against the massive tourque the engine produces to stop you from ripping the gearbox out if you floored it from low speed! Hmmmmmmm........

Now done 38000km and took it into a VW dealer in Rodez (SW France). for the annual service, they said they could not get a reading from bank two! Also wanted to take it apart to investigate.

Picked it up anyway and it now seems even more pronounced missing at said rev's.

If it was a petrol engine I would have said straight away that it was a high tension breakdown under load.

But it's not a petrol engine......I am now convinced that there is a problem, another post has said air mass meter on a 2.5 (whicch is half the V10) sorted it. The trouble is that I get the distinct impression that here in France there are very very few V10's and even less VW engineers who are familiar with it. I am loathe to drive it to Germany to get it sorted but will if I have to.

It's very annoying it's just at the 50kph speed limit and we live in the country where you cannot go much faster anyway.

Oh, the engine fault light comes on now and then, (it's the lambda sensor in the exhaust) I previously had it reset which cured it for a couple of months, but don't bother anymore because it resets itself in a couple of days. If I could find a decent VW dealer I would get it replaced, but at present have no faith in French VW service at all.

Any help or comment would be greatly appreciated, it's the best car I have ever driven apart from the above and I don't want to get rid, but I am getting fed up. Probably should hve bought a Cayenne in the first place, but I wanted a diesel.

 

[Tregtech]

Hi there
there is an build in funtion in the software that protect the car against idiotic drive stile, like having your foot on the brake and floor the car in gear and then drop the brake to create a massive wheel spin.

The fact that they couldnt make comunication with bank2 tells me there is an software issue. However bank 1 the master should say there is no comunication from bank2 the slave control unit and also gateway control unit should show that fault.

Apart from that i dont think air supply would cause a quick flat spot like that. Its either fuel supply ie. injectors or software .
If it was the air mass meter a fault would show and it would default to the readings from bank 1.
All senders/sensors are input signals and show a fault when it goes awall.

Dont go for the Porsh, its a super toffed VW that is well over priced

D

 

[ToeRagV10]

Wow,

at last someone who knows what they are talking about.....thanks for your reply.

My next problem is finding someone who can fix it. I think you are right (hopefully) that it is a software fault or an injector, I must admit that the Rodez VW did suggest an injector,but I was suspicious as injectors don't normally fail at 38000km but it also has been a bit iffy from new and Rodez VW said that until they took it apart they would not really know! A bit like giving them a blank cheque.....and unfortuantely quite a few still regard us as "stupid rosbif's" to be taken to the cleaners at every opportunity.

How do you find out if a VW dealer is knowledgable? I mean they are not going to admit they have not got a clue when it comes to a V10....

 

[Tregtech]

well its pretty easy realey. If a VW dealer says they are a luxury car dealer then they chould have a licenced technician who knows this cars reletivly well, and if they are not a luxury car dealer then stay away.

When you do take the car to a dealer leave the car with them as this fault could be complicated . If they do get stuck , then the factory's technical representitive team in france will assist them. some of these guys are shit hot .

All the best . hope its some thing small and not major.

D