[tech]: idle specs on a 2.0L 16v cis-e?

[abatzis2@hotmail.com (Michael Abatzis)]

ah, i've dragged you down to my level of thinking :) that's how i understand 
it. the idle speed itself is not adjustable, per bentley. the computer has 
the correct speed hardwired, and it's your job to make everything right in 
order to get there. so it'll switch duty cycle to make the idle speed right. 
and yes, it should still idle at the right speed, but your tolerences would 
be less since the the computer is already working to correct for the 
maladjusted bypass screw. anyone with real knowledge want to weigh in on 
this one?

-michael
btw, my idle miraculously cured itself with the apparent end of winter here 
in the ATL.

>From: 16V Jason <jason@scirocco.org>
>
>Your thinking does make sense -- I think. :)
>Unfortunately I don't have my Bosch manual in front of me -- but lemme ask
>everyone:  Is the idle speed adjusted by the duty cycle?  Or (if my
>understanding is correct), does the duty cycle just indicate whether the
>idle air bypass screw is adjusted properly?
>
>If I'm right, and the computer knows idle speed, and changes duty cycle to
>keep it where it's supposed to be (but can only do it within certain limits
>and therefore you have to check the duty cycle to see if the screw is in
>the right range), then Michael's right... the duty cycle would be higher
>than it was in the 1.8... which would mean that the idle adjustment screw
>should technically be adjusted to bring the duty cycle back down.  However,
>if the car still idles perfectly, then the idle screw is set to a value
>that is still within the aux air bypass's ability to stabilize it and
>therefore it's not 100% necessary to adjust anything.
>
>...or am i just nuts? :)
>
>Jason
>


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