[tech]: STILL high idle speed-driving me nuts!

[amalventano1@comcast.net (Allyn)]

Mike,
    You should be able to look down the hole and see the valve moving as it hums. If its stuck you
may be able to clean it out/free it and save your cash.
Al

----- Original Message -----
From: "Michael Abatzis" <abatzis2@hotmail.com>
To: <scirocco-l@scirocco.org>
Sent: Sunday, February 24, 2002 5:34 PM
Subject: [tech]: STILL high idle speed-driving me nuts!


> ok, so i've had intermittant idle probs since the 16v 2l swap in august
> (still cis-e). every once in a while it idles at 2-3k rpm for a few
> days/weeks, then it'll run fine. usually doesn't hunt; when it finds an idle
> speed it likes, it stays pretty constant.  all new vaccum lines, all
> electric connections cleaned during swap, new grounds, timing perfect. oxs
> checked out a month or so ago. the main suspect is the idle stabilizer
> valve. the evidence:
>
> 1. the dwell stays at 26' (within spec) no matter what. turning the bypass
> screw does little to the idle, and less to the dwell.
> 2. electrical tests check out w/ valve-- continuity between terminals,
> getting voltage, humming nicely. however, disconnecting the plug with the
> engine running does nothing to the idle, even when a/c compressor etc turned
> on. hmmm...
> 3. when the thing is humming (and when it isn't too), i can blow air from
> one side to the other w/o resistance at all. i'm guessing this isn't how
> it's supposed to work (should alternate open/closed per duty cycle, right?)
> but i don't know.
> 4. when driving, engine still doesn't like to go below 2k rpms. it kind of
> bucks like the throttle's stuck open. again, if the valve is faulty, this
> makes sense.
>
> my theory is that the damn thing isn't closing at all, and letting too much
> air in. but the bentley tests check out, which makes me wary about replacing
> it, especially since they're $200. any other ideas? i'd appreciate any help
> from you knowledgeable guys...
>
> -michael
>
>
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