[Supras] Increased idle with AC on?

[Jim Jobe]

No, it's not.  There is one valve used to control idle speed.
It's the ISC (Idle Speed Control).  Also ignition timing
is used to further stabilize idle speed.

There is a Fuel Pressure VSV that is sometimes activated
at idle to raise fuel pressure, but not to control idle
speed.

On Tue, Aug 07, 2007 at 02:18:38PM -0400, suprarossa at aol.com wrote:
> This isn't accomplished via VSV?
> 
> 
> ?Greg Altig
> Frederick, MD
> '92 & '89 Mk III Turbo/Targa/5 Speed "The 5 liter eaters"
> '85 Mk II P-Type
> Home Page - http://www.geocities.com/suprarossa
> Maryland Supras! Come join us at http://www.mdsupras.com/
> 
> 
> 
> -----Original Message-----
> From: Jim Jobe <jjobe2 at supratech.org>
> To: Rockey Fox <supr91tt at yahoo.com>
> Cc: supras at supras.com
> Sent: Mon, 6 Aug 2007 9:26 pm
> Subject: Re: [Supras] Increased idle with AC on?
> 
> 
> 
> 
> Yes.
> 
> On Mon, Aug 06, 2007 at 06:20:35PM -0700, Rockey Fox wrote:
> > Pardon my ignorance but it seems like the engine should increase idle speed 
> above 600 rpm when the AC is on. I was looking for the electric solenoid 
> commonly used on American iron and didn't see one on my Supra in the throttle 
> linkage area. Is the ECU responsible for increasing idle via ISC for this 
> additional load?
> > 
> > Thanks,
> > Rockey 91T M/T
> > 
> > 
> > 
> > 
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