Re. Narrowing down my start issue (84 4kq)

[Huw Powell]

> Starting to get discouraged... if you give it any throttle over a light
> touch of the gas pedal for the first minute (when cold) it bogs and
> wants to die. Does the same when hot but only for the first 8-10
> seconds... Im thoroughly stumped. Car has great power through the RPM
> band, top & low end are fine, idle is always rock solid just shy of 1k,
> cannot source any vac leaks with the chemtool when warm or cold... not
> really sure what else to check. Once the start symptoms pass, the car is
> perfect.. it doesnt drive like it has any issues at all which just adds
> to my frustrations.

So the problem is occurring before it goes into closed loop and uses the 
OXS to regulate the mixture.

If someone has tinkered with the static adjustment (the 3mm thing), it 
may very well be too lean or rich during this phase, since there is no 
feedback.

You mentioned picking up the bits to measure the control pressure 
actuator current.  Get them, or hack something together and do it.

You mentioned the PO messing with it for "emissions" purposes, who knows 
where they left it...

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/