[DML] Re: High idle dilemma
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[DML] Re: High idle dilemma

Hi Knut,
     Thanks for the reply.  Earlier I thought I was having that
problem.  I have the screw on the throttle arm making contact and
tripping the idle speed microswitch.  I can hear it click.  However,
it is not bottoming out at all.  I have tried all sorts of
combinations from barely touching and tripping to bottoming out, but
no avail.  When the switch is bolted to the intake, high idle.  It is
really bothering me and makes no sense.

VIN 16816

--- In dmcnews@xxxxxxxxxxxxxxx, "ksgrimsr" <knut.s.grimsrud@...> wrote:
> Hi Matt,
> From your description, it sounds to me like the adjustment screw 
> that trips the microswitch is adjusted too far so it securely trips 
> the microswitch but in the process it also bottoms out the switch 
> and prevents the throttle plates from closing completely. You might 
> try backing the adjustment screw off a little bit for a good balance 
> that gets you both complete closure of the throttle plates and the 
> switch tripping.
>   Knut
> --- In dmcnews@xxxxxxxxxxxxxxx, "Matthew P. Olans" <mpolans@> 
> wrote:
> >
> > Hey everyone,
> >         I need some help.  Can't pass emissions.  I'm running rich 
> because
> > my idle is about 1400 RPM.  My idle speed microswitch did not seem 
> to be
> > working, so here's the catch:
> > 
> > When I unbolt it from the car and press it, my car idles right at 
> 770 RPM,
> > perfect.  When I reinstall it, 1400 RPM.  The throttle arm screw 
> is adjusted
> > perfect and pushes the idle speed microswitch down when you let 
> off the
> > pedal.  Even if you push it by hand or with a screw driver, when 
> it is
> > bolted to the car, high idle.  When not bolted to the car and you 
> push it,
> > perfect idle.  I have even tried a new switch AND one working on 
> another
> > car....same symptoms.
> > 
> > WHY?!?  This makes no sense to me.  Anyone have any ideas on this 
> one?
> > 
> > Thanks in advance,
> > 
> > Matt
> > VIN 16816
> > The Arizona DeLorean Club
> >

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