E-30 Erratic Idle Followup

[Al Waschka <awaschka@xxxxxxxxxxx>]

Thanks for all the reads and suggestions on my problem.

Just thought I'd bring you up to date.  I got seveeral replies to my
post about erratic idle with the A/C off.  Most suggested that I had
ruined my idle control motor by cleaning it.  I found this hard to
believe, since it works great with the AC on.  I also remembered that
the Bentley manual has a procedure for adjusting the valve.  I was going
to try that, but it ended up being even simpler.  I was chasing several
problems, including strange temperature readings on the OBC and erratic
gauges, so I pulled the instrument cluster, disassembled it and looked
for broken connections.  I found none.  But when I pulled it, I noticed
that apparently the last time I pulled the cluster I had forgotten to
reconnect the single green wire that plugs into the green connector
under the white connector on the cluster.  It is circuit A, but I don't
know what that is and I can't find it on the diagrams in my Bentley
manual.  Guess what?  When I put the car all back together, the idle is
smooth as glass with AC on and AC off.

"Your results may vary"

By the way...while I had the cluster and the radio out I gave the
evaporator housing a closer look.  It looks like the top of the housing
is held on with a bunch of metal clips.  I'm hoping that later this year
when I change the dash I can get the housing apart and solve my recirc
door problem, the subject of another post which got no responses.

Al Waschka
87 E30 325e
BMWCCA

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