'89 200q airflrow sensor oddity ... update

[JustaxPHX@aol.com]

Well, I've now got it off the car and it turns out I was wrong ... there is 
not now nor was there ever an adjustment screw in place.  What I thought were 
threads were actually tool marks and there is steel post where the screw's 
usually located and it appears to have been pressed into place.

I've double-checked the Bentley manual and can find no information about this 
airflow sensor at all ... is there any way to adjust the idle mixture on this 
car?  If not with an adjustment screw, then how?

JG