Turbo problem A6 Avant 2.7 TDI Quattro
Discussion
Just wondering if fellow owners have had these problems.
Driving home this afternoon after a long weekend away suddenly lost power and orange glow plug error came up on the dash.
Rang audi roadside assist whilst still driving who advised me to pull over asap as i was in limp mode quiet handy ss down the road.
A hour later they appear and plug in laptop 2 errors come up sticking turbo and faulty fuel sender unit.
When car started again fault cleared i was advised to leave it in sport mode to keep the revs up.
That morning started car and fuel guage registered empty which i new was'nt true put £60 in and said 250 miles again untrue.
Slowly rose to read 600 miles which is about right.
As the car is 2006 and 20k miles old surprised to have these faults will be ringing audi tomorrow to book it in.
V8 Animal
Driving home this afternoon after a long weekend away suddenly lost power and orange glow plug error came up on the dash.
Rang audi roadside assist whilst still driving who advised me to pull over asap as i was in limp mode quiet handy ss down the road.
A hour later they appear and plug in laptop 2 errors come up sticking turbo and faulty fuel sender unit.
When car started again fault cleared i was advised to leave it in sport mode to keep the revs up.
That morning started car and fuel guage registered empty which i new was'nt true put £60 in and said 250 miles again untrue.
Slowly rose to read 600 miles which is about right.
As the car is 2006 and 20k miles old surprised to have these faults will be ringing audi tomorrow to book it in.
V8 Animal
Yeah both fairly common faults. Turbo not an every day thing, but we've done a few on the new 2.7 and 3.0 TDi. Mainly on Q7's but is the same engine in the A6.
Fuel tank senders is known issue. They might do a software update to the dash panel first, and let you try it. The dash effectively damps the signal from the senders, so as not to keep changing when fuel surges in the tank round corners etc. New software reduces the amount of damping.
If still problem, new senders.
Fuel tank senders is known issue. They might do a software update to the dash panel first, and let you try it. The dash effectively damps the signal from the senders, so as not to keep changing when fuel surges in the tank round corners etc. New software reduces the amount of damping.
If still problem, new senders.
Picked my car up tonight after leaving it with derby audi for 3 days.
Guess what they could'nt find anything wrong with it.
So got a valet for nothing so can't be bad.
Seriously i ain't impressed it's not as if im making it up i saw the faults myself on the vag assistance laptop.
I was told to run along and monitor it
V8 Animal
Guess what they could'nt find anything wrong with it.
So got a valet for nothing so can't be bad.
Seriously i ain't impressed it's not as if im making it up i saw the faults myself on the vag assistance laptop.
I was told to run along and monitor it
V8 Animal
Sometimes I wonder if I'm the only one doing my job properly.
If the turbo plays up again, just do an ignition cycle, and it will be fine, until next time.
What happens is the turbo get stuck and makes too much boost pressure, the ECU see's this and limits the power massively, so the excess boost pressure doesn't damage the engine. Ignition off tehn on again resets the safety setting it gets in.
If you want to make it fail, so they fix it. Keep driving at low rpm and full throttle, say off of roundabouts at 1200-1500rpm, give it full beans, and keep doing it when ever you can, especially up hills. This makes the turbo actuator work harder and it will eventually stick again. If it fails and is sticking all the time, so you only get a few miles before the safety cuts in, do the opposite, keep the revs up.
Am I making sense??
If the turbo plays up again, just do an ignition cycle, and it will be fine, until next time.
What happens is the turbo get stuck and makes too much boost pressure, the ECU see's this and limits the power massively, so the excess boost pressure doesn't damage the engine. Ignition off tehn on again resets the safety setting it gets in.
If you want to make it fail, so they fix it. Keep driving at low rpm and full throttle, say off of roundabouts at 1200-1500rpm, give it full beans, and keep doing it when ever you can, especially up hills. This makes the turbo actuator work harder and it will eventually stick again. If it fails and is sticking all the time, so you only get a few miles before the safety cuts in, do the opposite, keep the revs up.
Am I making sense??
Tame Technician said:
Sometimes I wonder if I'm the only one doing my job properly.
If the turbo plays up again, just do an ignition cycle, and it will be fine, until next time.
What happens is the turbo get stuck and makes too much boost pressure, the ECU see's this and limits the power massively, so the excess boost pressure doesn't damage the engine. Ignition off tehn on again resets the safety setting it gets in.
If you want to make it fail, so they fix it. Keep driving at low rpm and full throttle, say off of roundabouts at 1200-1500rpm, give it full beans, and keep doing it when ever you can, especially up hills. This makes the turbo actuator work harder and it will eventually stick again. If it fails and is sticking all the time, so you only get a few miles before the safety cuts in, do the opposite, keep the revs up.
Am I making sense??
Yep.If the turbo plays up again, just do an ignition cycle, and it will be fine, until next time.
What happens is the turbo get stuck and makes too much boost pressure, the ECU see's this and limits the power massively, so the excess boost pressure doesn't damage the engine. Ignition off tehn on again resets the safety setting it gets in.
If you want to make it fail, so they fix it. Keep driving at low rpm and full throttle, say off of roundabouts at 1200-1500rpm, give it full beans, and keep doing it when ever you can, especially up hills. This makes the turbo actuator work harder and it will eventually stick again. If it fails and is sticking all the time, so you only get a few miles before the safety cuts in, do the opposite, keep the revs up.
Am I making sense??
Then when it's dirty book it in again
As this was warranty work would there have been another outcome if i was paying..............Err
The turbo fault sounds as suggested above to be an over boost issue.
A quick scan of the codes will reveal all.
The Variable vane in the turbo is clogged up and need to be cleaned. I normally strip and clean in an ultra-sound bath. Works ok for my customers cars.
You also should check the vacume lines to the variable vane turbo and the connected pipes are holding vacume. Often they have chaffing/splits and the vacume needed for the variable vane and EGR is lost.
A quick scan of the codes will reveal all.
The Variable vane in the turbo is clogged up and need to be cleaned. I normally strip and clean in an ultra-sound bath. Works ok for my customers cars.
You also should check the vacume lines to the variable vane turbo and the connected pipes are holding vacume. Often they have chaffing/splits and the vacume needed for the variable vane and EGR is lost.
Edited by philip walker on Wednesday 17th September 17:37
New 2.7/3.0 TDI have electronic vane actuator attached to the turbo its self. (little black box)
Nice environment for and electric motor, bolted to a glowing turbo. But thats how they do it these days. Jaguar do the same on there 2.7 twin turbo diesel. We had the same trouble with them too.
Nice environment for and electric motor, bolted to a glowing turbo. But thats how they do it these days. Jaguar do the same on there 2.7 twin turbo diesel. We had the same trouble with them too.
Tame Technician said:
New 2.7/3.0 TDI have electronic vane actuator attached to the turbo its self. (little black box)
Nice environment for and electric motor, bolted to a glowing turbo. But thats how they do it these days. Jaguar do the same on there 2.7 twin turbo diesel. We had the same trouble with them too.
Look forward to those when they fall out of the dealer network then....!Nice environment for and electric motor, bolted to a glowing turbo. But thats how they do it these days. Jaguar do the same on there 2.7 twin turbo diesel. We had the same trouble with them too.
So they still clog up same as the older 2.5 tdi`s?
We're not sure if the electronic actuators stick, or the vanes clogged inside. Depending on model numbers and such we either replace the black box (if its got a number on thats a know bad batch), or replace the whole turbo. They go back to Audi, so we dont get to see whats wrong inside.
Turbo's about £1000 just for the part.
Turbo's about £1000 just for the part.
Update:
Ran the car almost dry guage was reading empty amd miles to go 0 on the dash.
Put £70 in guage reads three quarters miles to go 275.
Don't think that's right.
Spoke to derby audi it's now booked in again in a fortnight.
They are going to flash the computer and drop the tank to fit a new sender.
That can't be a cheap job for them.
See if that sorts it.
Turbo not played up yet.
V8 Animal
Ran the car almost dry guage was reading empty amd miles to go 0 on the dash.
Put £70 in guage reads three quarters miles to go 275.
Don't think that's right.
Spoke to derby audi it's now booked in again in a fortnight.
They are going to flash the computer and drop the tank to fit a new sender.
That can't be a cheap job for them.
See if that sorts it.
Turbo not played up yet.
V8 Animal
Tame Technician said:
Yeah both fairly common faults. Turbo not an every day thing, but we've done a few on the new 2.7 and 3.0 TDi. Mainly on Q7's but is the same engine in the A6.
Fuel tank senders is known issue. They might do a software update to the dash panel first, and let you try it. The dash effectively damps the signal from the senders, so as not to keep changing when fuel surges in the tank round corners etc. New software reduces the amount of damping.
If still problem, new senders.
Looks like you were right.Fuel tank senders is known issue. They might do a software update to the dash panel first, and let you try it. The dash effectively damps the signal from the senders, so as not to keep changing when fuel surges in the tank round corners etc. New software reduces the amount of damping.
If still problem, new senders.
Dash has been flashed and now have a fuel guage/computer that works.
V8 Animal
It needs a pair of sendors, there is a TSH on it (is known fault), but Audi insist the software update is tried first as its fixes some vehicles and because ITS FREE. They really should have done that the first time, then you would only be on your 2nd visit instead of third.
If you can its best to send the car in with less and 1/3 of a tank, other wise some fuel will be spilled and can end up inside the car, it unavoidable. The tank is under the rear seat.
It is really hard to get the new sendors to seal in the top of the tank, so when you pick it up, fill up with fuel slowly at the petrol station nearest the dealer, so you can take it straight back if it leaks. As they have been messing you arround a bit, I would demand a free tank full of fuel, then they will be able to test it properly.
I take it the turbo hasn't played up since.
If you can its best to send the car in with less and 1/3 of a tank, other wise some fuel will be spilled and can end up inside the car, it unavoidable. The tank is under the rear seat.
It is really hard to get the new sendors to seal in the top of the tank, so when you pick it up, fill up with fuel slowly at the petrol station nearest the dealer, so you can take it straight back if it leaks. As they have been messing you arround a bit, I would demand a free tank full of fuel, then they will be able to test it properly.
I take it the turbo hasn't played up since.
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