[V8] Idle speed too high

Ron Wainwright ron_01056 at yahoo.com
Wed Jan 21 07:08:32 PST 2009

Have you checked/adjusted the dashpot Ed?

 But I agree that if you DID NOT fully remove the TB from the front of the car you should.
 To me it sounds like the bearings are sticky... if you can push the front of the throtle rod & make the idle adjust... I would remove the TB from the front of the motor & fully lube the bearings & clean off the TB butterflys top & bottom & the rims/cylinder/openings of the TB.


--- On Mon, 1/19/09, Ed Kellock <ed.kellock at msn.com> wrote:

> From: Ed Kellock <ed.kellock at msn.com>
> Subject: [V8] Idle speed too high
> To: "'q - V8'" <v8 at audifans.com>
> Date: Monday, January 19, 2009, 10:29 PM
> Patient is my 91 5spd.  Idle speed is consistently a little
> too high, like
> 1100.  Here's what I've done....
> -removed/cleaned ISV
> -adjusted TPS
> -opened up and cleaned throttle butterflies directly
> -lubricated throttle rod/pivot assembly (it was and is
> smooth and returns
> to stop solidly)
> -went through everything again checking for vacuum leaks
> -checked cruise control for adjustment etc., no
> interference
> Initially I could lower it some by pushing down on the
> small lever at the
> front and I found that I had the TPS adjusted so that it
> was causing the
> throttle to hang open a bit.  I loosed the TPS, pushed down
> on the level,
> backed the TPS off a little tiny bit more and snugged it
> down.  I
> confirmed it still returns to closed throttle position
> (click).
> The last thing I did was unplug the ISV and start the
> engine.  The idle
> seemed right for a moment but then slowly climbed up to
> 1100.  It seems
> like it's ECU or something.
> When I turn the engine off, there's a clack in the
> passenger side fender
> well.  I know there's some emmissions shite in there, a
> reservoir and a
> valve of some kind, but I don't know what it
> should/shouldn't do.  I am
> fairly sure I've never heard a clack from that area
> ever on any of my V8s.
> Maybe I just never noticed.
> Thanks,
> Ed
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