Date:         Sun, 21 Dec 2014 13:35:55 -0600
Reply-To:     Jim Felder <jim.felder@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jim Felder <jim.felder@GMAIL.COM>
Subject:      Re: Isolating an idle problem?
Comments: To: Stuart MacMillan <stuartmacm@gmail.com>
In-Reply-To:  <013401d01d55$03ce45e0$0b6ad1a0$@gmail.com>
Content-Type: text/plain; charset=UTF-8

Somebody give me a part number, I'm pretty sure I have a loaner that could
be purchased if needed and returned if not.

Jim

On Sun, Dec 21, 2014 at 1:33 PM, Stuart MacMillan <stuartmacm@gmail.com>
wrote:
>
> Idle control module, or a vacuum leak (hook up a vacuum gauge).  Try to
> find an ICM to borrow for testing, they are expensive. It's mounted way
> behind the right tail light. Not a very good location for a computer that
> is not waterproofed.
>
> Stuart
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of Don Hanson
> Sent: Sunday, December 21, 2014 8:43 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Isolating an idle problem?
>
> I've been seeing an intermittent low idle-sometime no idle with my Digifant
> 84 van 92 rabbit/fox/Jetta ecu, etc.  This condition is occasional, when
> not happening, the engine behaves normally, my fuel consumption has not
> changed.
>   My normal idle is about 900 rpm.  Recently I have had the idle decide to
> run at around 400 rpm...it seems to be smooth, but 400 rpm is too low and
> now the motor sometimes dies down there.  When I cycle the key and re
> start, it will again run at the low idle...no "reset"... I have a new temp
> II sensor and new plugs...the old plugs read normal.  My idle control
> thingy hums as normal and I have no obvious new vacuum leaks. Multiple
> different fuel sources.  Throttle switch seems to conform to the Bentley,
> though I have so far only  check ed the mechanical, I have not run any
> electronic diagnosis yet.
>   Anyone want to suggest the most likely cause to this sometimes dying of
> my Digifant inline? Tia, Don Hanson
>