I'm new to the audi world. But a few weeks ago I purchased a 1984 coupe gt. It had some general emission issues that required a minor tune-up and thats all. But lately, it has been misfiring and running pretty rough. I changed the spark plugs, distributer cap, rotor, and wires. Made it run a bit smoother but not by much. Today the car wouldn't stay running at idle, so I bought a new idle control valve, and still nothing. The car will run and drive, but it cant idle on its own now. I cleaned the throttle body, checked vacuum lines but nothing. It's the 2.2L n/a 5cyl engine. If you know anything about this type of issue, please let me know...Thanks