Date: Sat, 27 Feb 2010 06:31:38 -0500
Reply-To: Doug <vanagons@COX.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Doug <vanagons@COX.NET>
Subject: Re: Three Items
In-Reply-To: <4B889405.9030205@qadas.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Jon,
"Question One: Had a problem about a year ago when Vanagon would
unexpectedly begin to run very, very rich. Lots of black smoke and no
power at all."
May or may not be your problem, but worth giving a look.
Friend of mine had exactly the same mysterious problem, and he and I
spent all day on it, and swapped every component, desperately trying to
fix it. Ran out of time, so had to give up temporarily.
He brought it to a mechanic, who promptly snipped the shielded cable for
the O2 sensor at the ECU end, and added a new wire to the sensor. Good
as new, problem solved!
Somewhere the cable was shorting internally, and after the van came out
of warm-up, went full rich with the fuel mixture.
Good hunting!
Doug
Jon Kanas wrote:
> Good Evening Folks,
>
> Finally got the Syncro back from the body shop; The paintwork is done
> and if it ever warms up enough to get rid of the glaciers in my yard
> I'll finish putting it back together. I have one question and need two
> parts if anyone can help:
>
> Need One: I need a center cap or two for the stock 14" alloy wheels.
> These seem to have vanished from our usual vendors. Anybody got any
> hanging around they'd like to sell, Nifty replacements or know of
> vendor(s) who actually might have some in stock?
>
> Need Two: The vent on the passenger's door, the black one in the lower
> corner with the blue slider is grim. I'd like to find a replacement
> from one of you folks who have a stash of doner vanagons.
>
> Question One: Had a problem about a year ago when Vanagon would
> unexpectedly begin to run very, very rich. Lots of black smoke and no
> power at all. Resetting the computer (turning the key on and off) would
> temporarily solve it. I cleaned all of the connections I thought were
> pertinent and the problem went away. Of course, since I didn't clean
> just one connection I don't have a clue which one fixed the problem.
> Like any interesting Vanagon problem, it reappeared today on the ride
> back home from the body shop. Again, the master symptom is the the
> mixture is suddenly becomes extremely rich while driving and renders the
> Vanagon undriveable. I'd love to hear any suggestions about what this
> might be or how to go about a diagnosis. What am I not doing:
>
> * Disconnected TempII - No effect on bad behavior. Reconnected
> * Disconnect oxygen sensor - No effect on bad behavior
> * Tested throttle switch on plenum per Bentley - Pass and adjusted
> correctly
> * Tested AFM per Bentley with VOM - Pass
> * Big hose between air cleaner and throttle body OK.
> * Little hoses (idle switch etc) on the intake side: OK.
>
>
> --
>
> *Best Regards,
> Jon B Kanas
>
> Website: http://www.qadas.com/~kanas <http://www.qadas.com/%7Ekanas> *
>
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