Hey guys looking for some advice, I'm having trouble with my 02 a4 1.8t. It started going into limp mode the other day and the epc light came on I could usually shut it off and it would be fine for a little while but two days ago on my way to work it started reving up n down on its own but went away later. That night I came out of work and the epc light stayed on no matter what I did under the hood I could tell the throttle body actuator couldn't set itself i scanned it vame up with the codes for the actuator so I replaced it yesterday and set it. The car started right up no epc light but still it idles erratic. Still have 2 codes cam sensor bank 1 and something about air leak upon start up. Any ideas?