2.0 TFSI won't rev past 4,000rpm

2.0 TFSI won't rev past 4,000rpm

Author
Discussion

The Cardinal

Original Poster:

1,274 posts

253 months

Sunday 23rd December 2018
quotequote all
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 smile

The Cardinal

Original Poster:

1,274 posts

253 months

Sunday 23rd December 2018
quotequote all
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.

The Cardinal

Original Poster:

1,274 posts

253 months

Monday 24th December 2018
quotequote all
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.

Edited by The Cardinal on Monday 24th December 20:30

The Cardinal

Original Poster:

1,274 posts

253 months

Tuesday 25th December 2018
quotequote all
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.

The Cardinal

Original Poster:

1,274 posts

253 months

Wednesday 26th December 2018
quotequote all
Thanks very much! I'm not local to Dorset, but appreciate the offer. smile

The Cardinal

Original Poster:

1,274 posts

253 months

Saturday 29th December 2018
quotequote all
I gave the car a quick scan with a generic code reader today, throwing up codes:

- P0141
- P0171

These could point to quite a few things, but may be the oxygen sensor and / or air fuel ratio?