[urq] Bad ISV Causes Racing Idle?

[Todd Phenneger]

I'll try it and see but I seem to recall that when that died on me once time it was only a small difference at idle.  I think its main purpose is to lean out the engine for fuel economy at idle or coasting down hill.  Without it the engine runs a little richer.

Anyhow, I'll check it with the DVM tonight.

Thanks


--- On Tue, 8/12/08, fdekat <fdekat at sentex.net> wrote:

> From: fdekat <fdekat at sentex.net>
> Subject: [urq] Bad ISV Causes Racing Idle?
> To: urq at audifans.com
> Date: Tuesday, August 12, 2008, 1:20 PM
> HEllo Todd:
> 
> Could the 'closed throttle' switch be
> malfunctioning? (I'm not sure it if's a
> normally open or closed switch). 
> 
> One never knows...  IT *is* mechanical, and it was supplied
> by Audi!
> 
> 
> -Frank-
> 
> > Message: 1
> > Date: Mon, 11 Aug 2008 12:16:19 -0700 (PDT)
> > From: Todd Phenneger <tquattroguy at yahoo.com>
> > Subject: Re: [urq] Bad ISV Causes Racing Idle?
> > To: urq list <urq at audifans.com>, SpotatAshleys
> > 	<spotatashleys at hotmail.com>
> > Message-ID:
> <468838.27774.qm at web37008.mail.mud.yahoo.com>
> > Content-Type: text/plain; charset=us-ascii
> > 
> > Yea, I already pulled it and cleaned it with Carb
> Cleaner to no Avail.
> > 
> > But my questions still exists.  CAN JUST the ISV
> failure cause a car to
> > Idle that high.  3,500 - 4,000 RPM.  I mean, crimping
> the line to the ISV
> > causes the idle to die so I'm thinking yes, Its
> just normally when I hear
> > of ISV failures its cars dying or not idleing well. 
> But in this case, it
> > just Idles at 4k RPM.  I didnt realize the ISV could
> pass that much air
> > through.
> > 
> 
> _______________________________________________
> Audifans urq mailing list
> Send posts to: mailto:urq at audifans.com
> Manage your list connection:
> http://www.audifans.com/mailman/listinfo/urq
> 
> North American Celebration of the 25th Anniversary for the
> urquattro: http://www.urq25.com/
> 
> Pictures/Polls/Database at:
> http://autos.groups.yahoo.com/group/urquattro/
> 
> You can help keep the audifans site running by shopping at
> http://audifans.com/shop/