Date:         Mon, 29 Apr 2002 11:13:08 -0400
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: Digifant de-evolution?
Comments: To: Matt Sutton <msutts@EARTHLINK.NET>
In-Reply-To:  <B8F2CD0A.DFC%msutts@earthlink.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 10:32 AM 4/29/2002, Matt Sutton wrote:
>Hi Folks,
>     -Starting cold with ISV connected and o2 sensor disconected, engine revs
>to about 2700 rpms, and just stays there- even after everything warms up.
>Starting cold with with both ISV and o2 sensor connected, it will do the
>same thing, until it warms up. Then the idle drops to a shakey 700 rpm, and
>I'm back to square one: a stinking superfund site on wheels that drives like
>it has double pneumonia.

Which suggests that the ISV is screwing up the works (and the ECU is trying
to compensate when it goes into closed-loop mode)  -- and it's under
command of the ISV control module (fwd of right tail-light) which is known
for playing nasty tricks.  Bad connections or bad board...


>     Any ideas are welcome: further diagnostic tricks, advice, scolding, etc.

Did you wash behind your ears? <g>

david


>Matt
>88 GL

--
David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"