2.0 TFSI won't rev past 4,000rpm
Discussion
I've picked up a 2007 Audi 8P A3 2.0T in the last few days, from a dealer.
The car has been running very nicely, but today threw up the Check Engine light - and won't rev past 4,000rpm in any gear (or in neutral).
It still drives well and has no other issues, but it obviously limits the car somewhat. My first thoughts ran to a coil pack or possibly the cam follower issue, although it's symptom-free below 4,000rpm. It's worth noting that the garage arranged for the cam belt changed as part of the purchase.
It's not a great time of year to be having this sort of thing happen unfortunately, so I doubt I will get it sorted quickly! Part of me also thinks that the garage wouldn't have access to the same expertise as my favoured VAG specialist.
In the meantime, has anyone got any ideas or similar experiences to share?
Thanks
The car has been running very nicely, but today threw up the Check Engine light - and won't rev past 4,000rpm in any gear (or in neutral).
It still drives well and has no other issues, but it obviously limits the car somewhat. My first thoughts ran to a coil pack or possibly the cam follower issue, although it's symptom-free below 4,000rpm. It's worth noting that the garage arranged for the cam belt changed as part of the purchase.
It's not a great time of year to be having this sort of thing happen unfortunately, so I doubt I will get it sorted quickly! Part of me also thinks that the garage wouldn't have access to the same expertise as my favoured VAG specialist.
In the meantime, has anyone got any ideas or similar experiences to share?
Thanks
Thanks All. It doesn't quite feel like limp mode as there's plenty of performance prior to 4,000rpm - it's just like the rev limiter kicks in then.
Yes, I will be taking it back to the trader - but between Christmas opening hours and my presumption that they aren't VAG experts, I'm not thrilled by the prospect.
It's a great car apart from this issue.
Yes, I will be taking it back to the trader - but between Christmas opening hours and my presumption that they aren't VAG experts, I'm not thrilled by the prospect.
It's a great car apart from this issue.
There's plenty of things that could be wrong - if the engine sees fuel pressure is low for example. The only real solution is a proper diagnosis but the AA/RAC can certainly pull the codes for you and see if they'll clear.
One really easy one you can try is to tank it up with 99 RON (Shell Optimax or Tesco Momentum) and drive it a bit harder. Cars in dealerships are often run down to the fumes/crap at the bottom of the tank. 2.0Ts always did like higher octane fuel so there's a chance that will clear it.
One really easy one you can try is to tank it up with 99 RON (Shell Optimax or Tesco Momentum) and drive it a bit harder. Cars in dealerships are often run down to the fumes/crap at the bottom of the tank. 2.0Ts always did like higher octane fuel so there's a chance that will clear it.
Drive Blind said:
on a previous car a hard 4k rpm limit turned out to be a faulty crank sensor.
You need to get the code(s) read.
If you don't want to pay dealership prices then maybe try a local vw,audi,seat facebook group. Somebody local with vcds might scan it for you for beer money.
Exactly, and the crank sensor is definitely a contender. But this does come with other symptoms ie complete loss of power and on/off off clocks. You need to get the code(s) read.
If you don't want to pay dealership prices then maybe try a local vw,audi,seat facebook group. Somebody local with vcds might scan it for you for beer money.
Update:
On the basis that it's been running fine below 4,000rpm, I chanced a possibly rash 110-mile round trip to my parents' house today complete with family (and AA card) on board.
Apart from the Check Engine light, it ran fine. I was driving it a little gingerly at first, but it did rev cleanly up to the red line and later at what felt like full boost. Phew.
I will be taking it to my trusted VAG specialist as soon as I can anyway, as it's due an oil change and some minor works. But I'm happy that this could be intermittent, or even - in a best case scenario - something that has passed. Perhaps that's a bit optimistic though!
Thanks for the suggestions so far.
On the basis that it's been running fine below 4,000rpm, I chanced a possibly rash 110-mile round trip to my parents' house today complete with family (and AA card) on board.
Apart from the Check Engine light, it ran fine. I was driving it a little gingerly at first, but it did rev cleanly up to the red line and later at what felt like full boost. Phew.
I will be taking it to my trusted VAG specialist as soon as I can anyway, as it's due an oil change and some minor works. But I'm happy that this could be intermittent, or even - in a best case scenario - something that has passed. Perhaps that's a bit optimistic though!
Thanks for the suggestions so far.
Edited by The Cardinal on Monday 24th December 20:30
Merry Christmas!
I'm happy with the car overall and don't plan to ask for a refund for the car unless it's definitely a serious issue.
I have a good relationship with the local VAG specialist. I was planning to get some routine work done to the car anyway, so will ask them to scan the codes before doing anything.
If it's something like one of the various sensors or other relatively common 2.0 TFSI issues that won't break the bank but are best interpreted by someone who works on them all the time, I'll proceed with the work and take it from there. It's a 12-year-old car, so I'm expecting minor things to need sorting.
If it's something worse, I'll leave it and go back to the dealer.
I'm happy with the car overall and don't plan to ask for a refund for the car unless it's definitely a serious issue.
I have a good relationship with the local VAG specialist. I was planning to get some routine work done to the car anyway, so will ask them to scan the codes before doing anything.
If it's something like one of the various sensors or other relatively common 2.0 TFSI issues that won't break the bank but are best interpreted by someone who works on them all the time, I'll proceed with the work and take it from there. It's a 12-year-old car, so I'm expecting minor things to need sorting.
If it's something worse, I'll leave it and go back to the dealer.
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