Idle problems 90Q (NG engine)

[Eyvind Spangen]

Thanks to all good tips, the problem is now gone. I replaced a small, 
cracked plastic thing that connects one of  the ISV hoses to the air box and 
the injector shroud system. Then I replaced the throttle switches, cleaning 
did not help.. BTW: expensive! Then I cleaned all connectors and used 
dielectric grease on them. I measured the DPR current and the o2 sensor, 
they are within spec.

The car now idles perfect at just below 800 rpm.. Now I can move on to the 
220k miles old suspension bushings.. ;)

Again, thank you everybody! ;)

-- 
Regards,
E. Spangen