quattro digest, Vol 1 #4260 - 15 msgs

[Larry C Leung]

I haven't tested the throttle switch yet, but the original faulty
one was replaced with the "new design" replacement. See
Scott Mockry's site, sjmautotechnik.com for details about
the idle/full throttle switch.

However, you've pointed out that I WILL have to test the
switch function. Seeing as new/used ISV's aren't cheap,
it's worth looking into w/rt to the $40 throttle switch.

BTW, if your switch is of the old style, I'd replace rather
than repair. From Scott's description of the design, you
will never have 100% reliability.

LL - NY



> Reply-To: "Lino M. Valadas" <l.valadas at rogers.com>
> From: "Lino M. Valadas" <l.valadas at rogers.com>
> To: <quattro at audifans.com>, "Larry C Leung" <l.leung at juno.com>
> Subject: Re: Idle problem, '89 200 TQ MC2
> Date: Tue, 26 Nov 2002 17:27:29 -0500
>
> Similar problem on mine.
>
> Here what I did:
>
> Opened up the WOT switch very carefully with an exacto knife and
> still cut
> the palm of my left hand :-(
> Anyway,  re-soldered all solder points (4).  High idling problem
> gone.
>
> HTH
>
> Lino
>
>
>
> ----- Original Message -----
> From: "Larry C Leung" <l.leung at juno.com>
> To: <quattro at audifans.com>
> Sent: Monday, November 25, 2002 11:23 PM
> Subject: Re: Idle problem, '89 200 TQ MC2
>
>
> >
> > Hello List;
> >
> > My '89 200Q, MC2, chipped seems to be idling rather high, even
> when
> > totally warm. It idles about 1200+ RPM even if I blip the
> throttle.
> >
> > I checked the Bentley, but have not had the time to do the whole
> > set of tests with the ammeter, and come to think of it, I'm not
> even
> > sure if my ammeter can handle 2 A.
> >
> > Anyway,  I tried unplugging the ISV with a fully warm engine and
> the idle
> >
> > dropped to an appropriate 850 RPM.
> >
> > When I plugged the ISV back in, it remained at 850, even after
> blipping
> > the throttle.
> >
> > As an aside, I recently replaced the engine grounds, which seemed
> to
> > help the engine running significantly, but seems to coincide with
> the
> > high idle.
> >
> > Is my ISV shot, or is there likely a different problem?
> >
> > TIA,
> >
> > LL - NY
>
>
>
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