I have a 2002 Audi a6 3.0l with misfiring cylinders. I all starting when I was driving fast on a highway and broke a cam seal and lost all power. I took it to the shop where that was fix but the car still wasn't completely fix because now it has a misfire when rpms ard under 3000. The shop tried to tell me, I also need a $2000 Valve job in order to fix the misfire. I am a college students so 2 stacks isn't easy to come up with so I still drive it but i use the semi manual shifter to keep the rpm above 2500. When i drive it at high way speeds i cant even notice a misfire besides the flashing check engine light. I only drive it on short trips knowing i could possible be causing more damage to the engine. I do have a couple engine codes(po455, po441, po102, po106, po300, po302, po306). Im not trying pay $2000 for a Valve job. I was wondering what else could possible be causing this misfire. I am very mechanically inclined so im good with figuring out how to fix cars if i do need a value job and you know the tools i need, it would be a great help to tell me, if not any other tips would be helpful thank you.

 

The manual tells you not to drive the car is you have a FLASHING CEL. I only had it once, when I had issues with some coilpacks. The car ran like crap, smelled like gas, and even the short distance (about 50 miles) that I drove to the dealer probably ended up causing the cats to fail. That's the bad news. If you google "Audi Pxxxx" for each code it will list several forums with discussions about how to resolve each code.