Flashing coil light and limp mode

[lukejames02]

Hello, looking for a bit of advice and apologies if this topic has come up before. Bought a 67 plate 2 litre quattro avant 3 days ago, drove it 150 miles home not a problem. Went to get fuel later that evening, not a problem. Started it up in the morning and set off to work, got 2 mins down the road and got the flashing coil light and car went limp. Pulled Into a lay by, turned the car off wait a second then back on and fault was gone and car was fine for the rest of the journey and fine home after work.

Next day exact same problem and had to do the same thing, again car ran fine. Today, started the car for 10 minutes before leaving and had no issues, took it to a garage and the only faults they could find were sparstic/passive and not really relevant to what's happening. The garage I got the car from said they will pay to repair the fault but I can't find it. Has anyone had experience of this type of fault before? Looking for some guidance really as don't want to reject the car back as in love with it but I can't spend 22k on something that's already got a problem. To me it seems that when the engine is cold something isn't happy. 

Please help me 

[alpha omega]

https://www.rac.co.uk/drive/advice/know-how/audi-warning-lights-what-they-mean-and-what-do-you-need-to-do/

[Stevey Y]

2 hours ago, lukejames02 said:

Hello, looking for a bit of advice and apologies if this topic has come up before. Bought a 67 plate 2 litre quattro avant 3 days ago, drove it 150 miles home not a problem. Went to get fuel later that evening, not a problem. Started it up in the morning and set off to work, got 2 mins down the road and got the flashing coil light and car went limp. Pulled Into a lay by, turned the car off wait a second then back on and fault was gone and car was fine for the rest of the journey and fine home after work.

Next day exact same problem and had to do the same thing, again car ran fine. Today, started the car for 10 minutes before leaving and had no issues, took it to a garage and the only faults they could find were sparstic/passive and not really relevant to what's happening. The garage I got the car from said they will pay to repair the fault but I can't find it. Has anyone had experience of this type of fault before? Looking for some guidance really as don't want to reject the car back as in love with it but I can't spend 22k on something that's already got a problem. To me it seems that when the engine is cold something isn't happy. 

Please help me 

Hi do you know which diagnostic platform was used, often as not your average Snap-on or any other unit wont go in to the ECU in any depth what you need is either VCDS or OBD Eleven they have the ability to do a deep interrogation of the whole system, it could be a faulty Maf sensor or a oxygen sensor, you wont know until its scanned with the right platform especially when around that year they began to change the cars software in preparation for SFD from 19 on, if you have an independent VAG specialist near you get them to read it, it wont matter that the garage you took it to can't find any faults, thats because their machine is not capable of finding them, the faults are there believe me the A6 logs everything I know that from my ownership.

Steve.

[ThomasG]

I had this, here's the thread...

 

[lukejames02]

Steve thanks, I will take it to a vag specialist and see if I can get the proper codes.

Thomas I can drive really quick in it, It's just the first few minutes of driving it I. The morning, thanks for the reply though, will need to get the proper code first