Date: Thu, 3 Jul 2003 15:35:38 +0000
Reply-To: fortinoj@SPEAKEASY.NET
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Joseph Fortino <fortinoj@SPEAKEASY.NET>
Subject: Re: ON/OFF TEST Re: 1991 Vanagon sputters and blows black smoke
on highway.
Content-Type: text/plain; charset="us-ascii"
one of the great features of a vanagon :)
question so the ECU only holds 1 second drop after turn off?
Joe
> -----Original Message-----
> From: Eric Zeno [mailto:vw4x4@FYI.NET]
> Sent: Thursday, July 3, 2003 11:14 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: ON/OFF TEST Re: 1991 Vanagon sputters and blows black smoke on highway.
>
> Simple...... When your Vanagon is acting up, driving down the road,
> simply turn the ignition switch off, count for one second, and turn it
> back on.
> This will reset the ECU. If the van starts running good for the next
> 15 seconds or so, you can safely conclude, that you have a ECU
> related problem. In other words, a bad mechanical part of any
> kind, will not be affected by this test and the van will not show any
> difference in running. Therefore, you have eliminated many
> possible problems.
>
> Eric
>
> Paul Nicklen wrote:
>
> >Hey Eric,
> >
> >Sorry to be slow on this stuff but how do you do the on off ignition test?
> >Many thanks, Paul
> >----- Original Message -----
> >From: <vw4x4@fyi.net>
> >To: "Paul Nicklen" <nicklen@PIONEERNET.NET>
> >Cc: <vanagon@GERRY.VANAGON.COM>; "emz" <emz@fyi.net>
> >Sent: Tuesday, July 01, 2003 11:16 AM
> >Subject: Re: 1991 Vanagon sputters and blows black smoke on highway.
> >
> >
> >
> >
> >>I've seen this problem time after time. I alway ask the same thing?
> >>Did you do the on/off ignition switch test to reset the computer,
> >>at the time the problem is acting up?
> >> Given these people are "good" mechanics, and assuming all
> >>the usual things have been checked, I would test the wiring
> >>from the temp. sensor to the ECU. These break were the wiring
> >>crosses from body to engine.
> >>
> >>
> >> Eric
> >>
> >>Paul Nicklen wrote:
> >>
> >>
> >>
> >>>Dear Van Owners:
> >>>
> >>>I have a 1991 Camper Van and she is running very rough on the highway,
> >>>
> >>>
> >losing power, sputtering, blowing black smoke and running way too rich ((I
> >think)). The van never dies completely. This problem is intermittent and
> >may only happen one day in three and 40% of the time on those days but when
> >it does, it can get severe and it has been towed on occasion. Several good
> >mechanics have looked at it and can't find a thing wrong with it. Now we
> >are starting to play the expensive game of randomly replacing parts. It
> >only has 4000km's on the new engine and has only done this since it got the
> >new engine.
> >
> >
> >>>We have replaced the air flow meter, O2 harness (two years ago), and it
> >>>
> >>>
> >continues to do this with these adjustments.
> >
> >
> >>>It is most noticeable up hills and on flats when there is a constant rpm.
> >>>
> >>>
> >It is not nearly as noticeable in the city. When I aggressively rev the
> >engine up to 5000rpm, it seems to temporarily clear the problem for a few
> >more miles down the road and then it starts again. Also, the problem seems
> >less noticeable when I drive the van at a higher rpm range. I was sure the
> >new air flow meter would fix it but no such luck. It did seem better for a
> >while but it sat in a snowbank all winter after the new meter was put in.
> >
> >
> >>>Any advice would be great and I feel fortunate to have access to so many
> >>>
> >>>
> >great mechanical minds.
> >
> >
> >>>Yukon Girl,
> >>>
> >>>Lyn.
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
> >
>
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