Gary, you ARE correct. I forgot about that as the third item.

John Rodgers
gary hradek wrote:

> John,
>          Great information, but doesn't the ISV kick
> the rpm up  for the power steering somehow?
>                  regards gary
>
> Date:    Mon, 28 Jan 2002 23:20:43 -0600
> From:    John Rodgers <jhrodgers@MINDSPRING.COM>
> Subject: Re: High Idle, Setting the timing
>
> Joel, you didn't mention what year your van is so I am
> going to assume
> it
> has a 2.1L Wasserboxer engine. If so, you need to warm
> the engine, then
> disconnect the Idle Stabilizer Valve (ISV)which mounts
> on top  center
> of
> the engine (it's a little cylindrical device mounted
> transversly with a
> wire connected to the left end when you are standing
> at the rear of the
> van facing forward.
>
> This little gizmo MUST be disconnected when you set
> the idle speed
> adjustment. It does two things: 1) keeps the idle
> speed up on a cold
> start so the engine doesn't stall. When the engine
> warms up, the ECU
> cuts
> it out of the circuit because it is no longer needed.
> 2) The ISV kicks
> up
> the engine idle rpm to 1200/1300 rpm when the AC is on
> to prevent the
> compressor load from stalling the engine. So far as I
> know this is the
> only two times the ISV come into play. But it MUST be
> disconnected to
> set
> the idle, which should be 800/900 rpm. Just forward of
> the ISV you
> should
> see a large slotted screw that is the adjustment
> screw. With the engine
> properly set up, turn the screw to adjust the rpm.
> Once set, shut down,
> reconnect the ISV. Restart and see if it idles
> correctly. Then allow
> the
> engine to cool and go for a cold start, watch the
> idle. If everything
> is
> right , it will be obvious.
>
> Good luck.
>
> John Rodgers
> 88 GL Driver
>
> Joel Sell wrote:
>
> > Volks,
> >         I've got email, but no internet access, so I
> can't search the
> > archives. Sorry. I'm battling a high idle- about 2k
> when the engine
> > warms up, but begins at 1k when the engine is cold.
> I replaced the O2
> > sensor, and started fiddling with the other
> adjustments I know of. I
> > tried to lower the idle with the little screw on the
> idle arm (?),
> > but it wouldn't go down much and I didn't think that
> was the root of
> > the problem. I tried adjusting that big flathead
> screw on the
> > throttle body, and the idle DID change some, but I
> wasn't totally
> > aware of what I was doing, so I just put it back
> like it was and left
> > it alone. Then I thought I might try to check the
> timing. How do I do
> > this? Do I have to unplug the TempII wires? What is
> the TempII
> > sender? Where is it? Any other suggestions?
> > Thanks,
> > Joel
>
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