engine vibration

[valjo]

hello
i have some problems with my aby audi coupe s2. the problem is, that there is some vibration in car, when engine is at idle to 1200 ravs. The idle run is very smoothly, at 750 ravs. does anyone has any idea what it should be?
please help me !

[Graham]

I used to get this, too be truthfull i havnt checked if i still have it, last time it seemed ok but god knows as i havnt changed anything. Car still drives well, and i still get 1.1 bar in 4th. I know its not right but it hasnt bothered me.

[valjo]

@graham my car goes good as it should too and from time to time vibration dissapires, but i would like to fix it anyway

[Graham]

I will have a chat with a few people too see what i can dig up. I assume it is some sort of program quirk, as other than this the car flies. It maybe the bridge between one set of settings and the next. Isnt it about 1200 rpm when the ISV becomes redundant as there is no need for it. It could be the ISV pulsing open and shut?. Maybe someone on here could shed some light as my knowledge of the ECU is limited, but i do intend to learn this system just so i can maintain it myself, and diagnose problems. Maybe in time to come re-map my own car but i know the hardware involved is expensive.