SSM993

Hi Guys,

I've been searching on here and also on the net, but can't seem to find any help for my issue.

So I bought a 2010 A4 B8 2.0 TDI CVT (CAG engine code) last week with 130k miles. Purchased it with a few issues including possible gearbox troubles. I've driven it about 500 miles so far, and just wanted a little advice as to whether you guys think my issue is gearbox related or what else I can check first.

So the car starts perfectly, and there is no jerking or clunking whatsoever when selecting Drive or Reverse. It drives 100% spot on up to about 2200 revs , then it starts shuddering , and loses power The shuddering is not violent, almost like going over a rumble strip. The only way to be able to continue driving it, is to ease off the accelerator and allow the revs to drop below 2,200rpm and then its happy again. In all honesty I've adjusted my driving to it , but the moment you go over 2,200rpm the shuddering and loss of power starts again, there is no slipping whatsoever. Something else to mention if it makes any difference is the cruise control works just fine, and on the motorway I have just been using that.

I have swapped over the MAF with another genuine one off my A6 (same part No) and it made no difference. My friend who is a mechanic scanned it with his snap on tool and no error codes were present. Prior to my purchase it has had a ton of works done , including cambelt, Inlet manifold, gearbox oil change and a ton of other bits and pieces.

Just seeing if anyone has an idea of what else it could be. I am expecting it to be worst case scenario and need a new CVT box, but I have had a few CVTs before and it seems very strong upto 2,200rpm , hence me wondering if it may just be something else.

Any advice would be greatly appreciated,

Thanks ,

Simon

beantown-Dan

I just had this exact problem with my 2009 a3 TFSI. I had no engine codes at all but when I took the spark plugs out they were blackened and clearly burnt out. After putting new ones in the problem went away.