Re: More Idling Weirdness

[Richard Beels <beels@technologist.com>]

Your car has the Auto-Check system.  Turn the Ignition on but do not start
the car.  The OK light should light for 5 seconds.  On the left side of the
instrument cluster, there are two pushable screw posts.  One is for the
clock, the other is for the autocheck system.  Push each one until you find
out which is which.  When you press the correct one, the auto-check lights
will display in sequence (oil, water, lights, brakes, flashers, etc...),
ending with an OK.  Turn the car off, press and hold the post and then turn
the ignition on, it should say 5?.  5 is for 5 cylinder cars, the ? is 1
for German speaking, 2 for US and 3 for non-German speaking countries (gas
engine).  4, 5 and 6 are the same order for diesel cars.  The 5 would be
replaced with a 4 for 4-cylinder (non-Q) cars.

FYI, the important characters in our VIN and how Audi references them
(using mine as an example) are xxxxxx89xJx292xxx.

At 07:17 AM 1/8/1999 ,  Tihol Tiholov was inspired to say:
> Hi, everyone and thanks again for the numerous responses.  It helped
> cleaning the ISV on the '88 90 Q - now the car is idling fine when warm.
> When cold, however, the RPM fall to about 500; it doesn't misfire, just
> barely keeps on running and needs some throttle to keep going.  Wander what
> may be the cause of this.  Someone suggested a sensor (coolant or such)
> sending faulty information to the ECU... I would appreciate some input.
> 
> Another thing: haven't seen a check engine light anywhere to come on (maybe
> it's a good thing after all), even when I turn the ignition switch on.  The
> last digits of the VIN are 299020 - it's supposed to be later 1988 model.
> Did some 1988 90 Q come without a check engine light?  Thanks,  Tihol


Cheers,
	Richard
	88 90Q "Hannu" - K+N, new vac hoses, lubed U-Joint, still 0.0 bar....
	88 Golf GTi - PRO Rally