83 urq stumble and other isues

[Huw Powell]

> New parts, and tested parts:
> wires,
> plugs,
> cap,
> rotor,
> tested intake air temp sensor,
> tested WOT switch,
> tested idle switch,
> adjusted idle and freq valve duty cycle to spec.

what did you adjust the FVDC to at warm idle?  You could try a lower
percentage, to get a richer mix when in open loop (cold start, WOT).

50% is supposed to be "right," (from my n/a memories) but I believe most
turbo folks set it just under 40% or so.

> Symptoms:
> Car stumbles under more than 1/2 throttle in 3-5 gears.
> Car pulls hard and smooth with less throttle and in 1-2 gears.
> No smoke or funny noises of any colour or sound.
> Car is hard to start and keep running from cold. Usually requires 2-3 tries
> then feathering throttle to let it warm up a bit before taking off.
> Warm start is fine.

--
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/