I have a wierd issue with my car, it happens when stopping somewhat quickly or hard. Now don't get me wrong i am not slamming on the brakes but coming from like 10 mph to 0 in like 2 seconds the Idle drops down to like 250 rpm's stutters and comes back up to 500 rpm. This doesn't happen if i slowly come down to a stop as often

Anyone have any thoughts? I was thinking maybe TPS needs adjusting or Carbon buildup in the TB.

Thanks again

 

tps sounds like a likely cause

 

What do you think it needs adjusting or replaced? There are no lights on though..

How hard is it to replace/adjust? Can it be a DIY or just bring it to AUDI?