Help with Audi A3 2.0 TDI - Turbo
Discussion
Hi All,
After some advice on my car. Its an 04 A3 2.0TDI (BKD Engine) 110k miles.
Last week the turbo went, it had gone into limp mode a couple of times the week before (overboost), along with making a siren noise and being a bit smokey, and on Monday just gone it went in a cloud of smoke. So had turbo replaced at a garage, with a recon unit from eurocarparts. New oil feed pipe fitted, Cat washed out, intercooler drained of the oil that had been blown through into it (after garage had fitted turbo they started the car and it wouldn't rev, so they discovered intercooler full of oil). Garage test drove it and I collected it this morning. It was noticeably not as quick as before the turbo going, the only way i can describe it is sluggish, it feels like it doesn't want to climb through the rev range.
This evening, dropping the girlfriend off for her works party, joining the motorway and limp mode again, I wasn't even booting it, just accelerating to get up to 70. So I stop and turn it off and on again and drop her off, then on the way back, at a roundabout the car sort of bogged down for a second and then loosened up. Great i thought, maybe just burning a bit of oil out the exhaust or intake, and then for a few miles it drove just as it should, perfectly. Then limp mode again on a dual carriageway when pulling out to overtake, and now it is back to being sluggish.
So, any ideas?
I know first thing is scanning for codes to see what the car thinks is going on, but I can't do this until tomorrow, and then I will ring the garage on Monday, but they shut from Christmas Eve until the new year, so don't know what they will be able to do in a day.
Apologies for the essay, but I wanted to include as much detail as possible.
Thanks in advance,
Smithy
After some advice on my car. Its an 04 A3 2.0TDI (BKD Engine) 110k miles.
Last week the turbo went, it had gone into limp mode a couple of times the week before (overboost), along with making a siren noise and being a bit smokey, and on Monday just gone it went in a cloud of smoke. So had turbo replaced at a garage, with a recon unit from eurocarparts. New oil feed pipe fitted, Cat washed out, intercooler drained of the oil that had been blown through into it (after garage had fitted turbo they started the car and it wouldn't rev, so they discovered intercooler full of oil). Garage test drove it and I collected it this morning. It was noticeably not as quick as before the turbo going, the only way i can describe it is sluggish, it feels like it doesn't want to climb through the rev range.
This evening, dropping the girlfriend off for her works party, joining the motorway and limp mode again, I wasn't even booting it, just accelerating to get up to 70. So I stop and turn it off and on again and drop her off, then on the way back, at a roundabout the car sort of bogged down for a second and then loosened up. Great i thought, maybe just burning a bit of oil out the exhaust or intake, and then for a few miles it drove just as it should, perfectly. Then limp mode again on a dual carriageway when pulling out to overtake, and now it is back to being sluggish.
So, any ideas?
I know first thing is scanning for codes to see what the car thinks is going on, but I can't do this until tomorrow, and then I will ring the garage on Monday, but they shut from Christmas Eve until the new year, so don't know what they will be able to do in a day.
Apologies for the essay, but I wanted to include as much detail as possible.
Thanks in advance,
Smithy
Scanned the car and got P0299 underboost condition.
obd2 logger is showing no more than 8psi boost (with a correction value of 0, there was the option for +/- 14.7psi.).
I also looked at intake manifold pressure vs boost and they correlated, so does this mean less likely to be a leak?
I'm leaning towards vacuum problem?
Any further thoughts appreciated!
obd2 logger is showing no more than 8psi boost (with a correction value of 0, there was the option for +/- 14.7psi.).
I also looked at intake manifold pressure vs boost and they correlated, so does this mean less likely to be a leak?
I'm leaning towards vacuum problem?
Any further thoughts appreciated!
Just an update to this.
Garage have rung, the fins from the intake impeller have sheared off the new turbo and got lodged in the intercooler. Luckily they got no further.
So the turbo is coming off again and is going back for a refund. I have the original turbo to prove that its not missing any bits which could have caused the new one to fail. Along with receipt for new oil feed pipe etc.
Garage are supplying and fitting a new garrett turbo, but wont be done until after Christmas.
Chalk it up to experience I guess, I won't be using a recon turbo ever again.
Garage have rung, the fins from the intake impeller have sheared off the new turbo and got lodged in the intercooler. Luckily they got no further.
So the turbo is coming off again and is going back for a refund. I have the original turbo to prove that its not missing any bits which could have caused the new one to fail. Along with receipt for new oil feed pipe etc.
Garage are supplying and fitting a new garrett turbo, but wont be done until after Christmas.
Chalk it up to experience I guess, I won't be using a recon turbo ever again.
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