<Audi> ISV question

[Steve Manning <stephenm@ix.netcom.com>]

Anyone know why I can't interchange the ISV between a NG (130hp atmo) and MC
(turbo/2 knock sensor) engine?  Of course they are different part #'s and
the NG has a Bosch while the MC has a VDO, but the hose/electrical
connections are the same.

Bentley gives detailed electrical specs for the MC ISV, but not for the NG
ISV.  I'm primarily afraid of blowing something electrical; also wondering
if the NG ISV can stand positive manifold pressure.

Any help appreciated....BTW I'm doing this to try to solve my (ongoing)
idling problem on my 90q.....SLM


Steve Manning:	stephenm@ix.netcom.com (Metro D.C. area, USA)
....Mainly Mopars; also '88 90Q/'90 200tqw/'88 635csi; other stuff
......BMWCCA #93xxx, FCA, USCC, QCUSA, Wagons of Steel, etc.