Hi, my AUM 1.8T has recently thrown the above code along with feeling quite stuttery at lower speeds. Normally under light load just as it's starting to come on boost.
I've read up on the likely causes but don't want to start throwing money at parts without having a good idea what the problem is. I've only got vcds lite so am limited in what blocks I can log as well.
I tried unplugging the maf and for a while it felt better but then the problem returned, although possibly not as bad. Since then I've had to remove and recharge the battery and since I reconnected it the ASR light is illuminated, which I understand is normal but is it relevant that it didn't come on when I initially unplugged the maf?
I've been driving the car carefully and I tend to do a lot of short journeys anyway but as far as I can tell it's only really a problem at slow, low rpm speeds. I would have expected a boost leak or failing maf to be more of an issue under heavy load? I did wonder about an injector stuck open as that seemed to make more sense.
The spark plugs were looking quite worn, but as expected colour wise. I've ordered new ones anyway in case that's the issue but thought that would generate a misfire code if it was the problem? I took the fpr off and it looked fine as far as it's possible to see. I've also checked the recirc valve holds pressure by pushing the spring in and holding my thumb over the vacuum port for a minute or so. I'm also about half way through a tank of petrol with some fuels system cleaner in.
Vacuum pipes etc I have checked as best I can and most have been replaced.
Any thoughts on the most economical way to proceed??
I've read up on the likely causes but don't want to start throwing money at parts without having a good idea what the problem is. I've only got vcds lite so am limited in what blocks I can log as well.
I tried unplugging the maf and for a while it felt better but then the problem returned, although possibly not as bad. Since then I've had to remove and recharge the battery and since I reconnected it the ASR light is illuminated, which I understand is normal but is it relevant that it didn't come on when I initially unplugged the maf?
I've been driving the car carefully and I tend to do a lot of short journeys anyway but as far as I can tell it's only really a problem at slow, low rpm speeds. I would have expected a boost leak or failing maf to be more of an issue under heavy load? I did wonder about an injector stuck open as that seemed to make more sense.
The spark plugs were looking quite worn, but as expected colour wise. I've ordered new ones anyway in case that's the issue but thought that would generate a misfire code if it was the problem? I took the fpr off and it looked fine as far as it's possible to see. I've also checked the recirc valve holds pressure by pushing the spring in and holding my thumb over the vacuum port for a minute or so. I'm also about half way through a tank of petrol with some fuels system cleaner in.
Vacuum pipes etc I have checked as best I can and most have been replaced.
Any thoughts on the most economical way to proceed??