[Shotimes] 89 SHO Idle Issues - Help Please

[Paul L Fisher]

Also IAB (Idle Air Bypass).
-- 

Paul L Fisher
'93 Ford Taurus SHO Crimson Clearcoat ATX 180K Build date 11/18/1992
- K&N Panel filter, Tokico Struts, Eibach Springs, Dynomax cat-back, Holley 
190lph fuel pump, FPS rebuilt ATX, 26mm rear sway bar, Performance-Plus 
Stainless Steel Y-pipe, Delrin sub-frame bushings, Amsoil Series 2000 0W-30 
oil, Amsoil Synthetic ATF.

SHO Club member http://www.shoclub.com/
Check out my web site http://www.paul-fisher.com/
Amsoil dealer http://www.paul-fisher.com/oil.htm



Quoting Steve Weinrich <stevwein@swbell.net>:

> Welcome to the list!
> 
> First, make sure the cruise control cable has not come unhooked from the
> throttle.  Mine tended to do that and would interfere with the throttle
> plate returning to the closed position.
> 
> Second, try running the KOER codes as presented in the FAQs at
> www.shotimes.com  See if any codes come up regarding idle speed control or
> control of engine RPMs.
> 
> If so, post them and we'll see what happens.
> 
> My instinct is that the problem will be an Idle Speed Control valve fault
> (or its associated electronics from the PCM).  The ISC costs about $55 from
> AutoZone and is not too terribly difficult to replace.  Well, that bottom
> screw is - it takes a LOT of Allen wrench repositioning.  AZ refers to it
> as
> the "Throttle Air Bypass" valve.
> 
> Steve
> 
> 
> 
> ----- Original Message -----
> From: "Mike Kelly (Test)" <shotimes@markvii.com>
> To: <shotimes@autox.team.net>
> Sent: Tuesday, December 30, 2003 1:53 PM
> Subject: [Shotimes] 89 SHO Idle Issues - Help Please
> 
> 
> > Hello.
> >
> > This would be my first post to your prestigious list.
> >
> > I own a 1989 SHO that is very temperamental. I am currently having a
> problem
> > with the engine idle speeds.
> >
> > Symptoms:
> >
> > While engine is running, if I hold the clutch in, it typically revs
> between
> > 1400 and 1800 continuously every 2 seconds or so.
> >
> > After driving, if I put it in neutral and let out the clutch, it revs at
> a
> > steady 2500 RPM for a full 30 seconds before revving between 1800 and
> 2500
> > every 5 seconds or so.
> >
> > Sometimes (though more rarely and possibly unrelated) going around turns,
> if
> > the clutch is in, it revs up to 3000 RPM, until I complete the turn.
> >
> > I don't trust dealerships because of past pillaging, and I am not near
> any
> of
> > the recommended mechanics (Memphis, TN). Could someone please let me know
> what
> > could cause this, so that I know what needs to be fixed before allowing
> it
> to
> > be worked on.
> >
> > Thank you,
> >
> > Mike
> > _______________________________________________
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> > Shotimes@autox.team.net
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