CIS-E air by-pass

[Kurt Deschler]

My apologies. I am confusing the ISV with the idle air controller system 
that the CIS-E 16V VWs use.
 	-Kurt

On Thu, 26 Aug 2004, Kurt Deschler wrote:

> That procedure works fine with the ISV hooked up. You are simply minimizing 
> the ISV correction through successive approximation. The only model specific 
> part is the idle rpms. Not everyone has the Bentley of the special tools 
> required for the "correct" procedure.
>
> 	-Kurt
>
> On Thu, 26 Aug 2004, Ti Kan wrote:
>
>>  Kurt Deschler writes:
>>>>  Can someone give me a definite answer on if the "idle air by-pass screw"
>>>>  (side of the throttle body) should be turned in all the way to the stop?
>>>>  Or should it be unscrewed 1-3 turns?
>>> 
>>>  The air screw should never be turned in all the way. To adjust it, you
>>>  need to listen how the engine winds down to idle from 2500 rpm or so. If
>>>  it dips under the target idle (~900 rpm??) when you release the throttle,
>>>  then you need to unscrew the air screw some. If it hangs above the target
>>>  rpms then slowly creeps down, then you need to turn the screw in. Take if
>>>  for a short drive, stopping to make any fine adjustments will yield a 
>>>  good
>>>  idle. Make sure that o-ring on the screw is good before trying to adjust
>> 
>>  Kurt,
>> 
>>  This is car and engine specific.  What you're describing is contrary
>>  to the function of the idle stabilization system on some models.
>>  The Bentley manual for the appropriate model should be the definitive
>>  guide when it comes to adjusting the idle, CO mixture, and ignition
>>  timing.
>> 
>>  -Ti
>>  --
>>  R 1 3 5  Ti Kan
>> | _|_|_|  http://www.amb.org/ti
>>   | | |   Vorsprung durch Technik
>>    2 4 6
>> 
>