[Shotimes] Re: Idle Speed Controller Question

[Carl Prochilo]

The EATC was in the OFF position during this time.  

You are saying I should run the KOER test for the ISC, right?  I probably just need to rip the intake off again and clean up that area better.  The problem is that I already stripped a stud for one of the intake braces, so I need to make sure I'm more careful and rested next time.
====
Cheers,
Carl Prochilo
1992 Ultra Red Crimson
 
---- Leigh Smith <leighsm@comcast.net> wrote: 
> Carl;
> Also check to see if the AC compressor may be failing / binding up.
> My 89 had an idle problem for 2 years that even a new ISC wouldn't help.
> Sporadic unstable idle / even to the point of stalling.
> Until the compressor blew and a new one fixed the idle problem.
> Just turn the climate control head to OFF and see if the problem goes away.
> An ECM self-test should identify a sticking ISC, but not a compressor.
> Lee
> ----- Original Message ----- 
> From: "Carl Prochilo" <gr8sho@prochilo.myserver.org>
> To: <shotimes@autox.team.net>; <TechSHO@topica.com>
> Sent: Monday, January 17, 2005 12:42 PM
> Subject: Re: [Shotimes] Re: Idle Speed Controller Question
> 
> 
> > Yes, IAB.  I was looking at Autozone website at the time.  Seems to have a
> > lot of different names.
> >
> > My car seems to struggle now to hold a steady idle.  It has been
> > developing slowly over that past few months but not to the point of
> > stalling (yet).  At this point the idle will drop down to 600 momentarily
> > before it bops up, and the low oil pressure light will come on.  Part of
> > the problem was masked by the LPM since it bumps the idle up slightly, and
> > now I've removed the LPM from the PCM.
> >
> > I was hoping cleaning the intake would cure the problem, but in fact I
> > neglected to clean the IAB while I had it off.  Is it just a matter of
> > pulling the part and spraying Berryman's in there?  I already know that
> > the lower screw is going to be a problem, so I may just pull the intake
> > off again to do it.
> > -- 
> > Cheers,
> > Carl Prochilo
> > 92 Ultra Red Crimson
> >
> > On Mon, January 17, 2005 10:21 am, Donald Mallinson said:
> > > Carl,
> > >
> > > You mean the Idle Air Bypass valve (IAB)?  I think that is
> > > what it usually is called.
> > >
> > > Symptoms are the car dies when you come to a stop and put in
> > > the clutch, especially after a highway run, like an exit
> > > ramp with a stop sign.
> > >
> > > ATX cars can develope a nasty rattling sound although the
> > > car will still idle, but not well.  Open the air cleaner and
> > > the rattle will be LOUD and that is usually the IAB.
> > >
> > > It can be cleaned with good results, certainly Performance
> > > Plus has been cleaning them on MTX cars since 1992 or so
> > > with good results.  Takes a few minutes, and if it doesn't
> > > work, then they replace it.
> > >
> > > I think the one on the ATX cars is different and usually it
> > > gets replaced.
> > >
> > > Don Mallinson
> > >
> > > Carl Prochilo wrote:
> > >> What are the symptoms of a failing ISC?
> > >>
> > >> Also, cleaning of the ISC is usually not considered to be effective,
> but
> > >> the part is cheap enough to just replace.  True?
> > >>
> > >> The ISC in question is from said 92 and is original (214K miles).
> > >> ====
> > >> Cheers,
> > >> Carl Prochilo
> > >> 1992 Ultra Red Crimson
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