Date: Thu, 23 Jun 2016 19:18:59 -0400
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: GOWESTY AFM no start problem
In-Reply-To: <B7292D4E-3E66-4869-B1E9-A03926B9FB49@gmail.com>
Content-Type: text/plain; charset="us-ascii"
As a 2 check for the O2 sensor signal wire, with the ignition on you should
measure ~.5-/6 volt between that wire and chassis ground with the sensor
disconnected.
Dennis
-----Original Message-----
From: Dennis Jowell [mailto:dennisjowell@gmail.com]
Sent: Thursday, June 23, 2016 1:22 PM
To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Cc: vanagon@GERRY.VANAGON.COM
Subject: Re: GOWESTY AFM no start problem
Dennis
I checked the plugs they are running on the lean side (whitish electrodes )
but no fouling there. The AFM is brand new from GOWESTY I just got it in my
mail and I never used it until yesterday.
Checked the O2 sensor connections. Green wire- the braided copper is
continuous to body ground, solid center wire to ground is around 200 ohms to
ground. I cannot find info on the required ohms for the center solid wire in
my Bently I originally thought that the solid center wire should not have
any ohms to ground on it. This must mean that the interior wire is making
contact with the braided wire. Would this be true ?
Dennis Jowell
Scotch Hollow Farm
Newbury, Vermont
> On Jun 22, 2016, at 8:37 PM, Dennis Haynes <d23haynes57@HOTMAIL.COM>
wrote:
>
> In your messing around you may have gotten it so rich you fouled the
> spark plugs. Check them first. If so the O2 sensor is most likely also
> fouled and if lucky the time period was short enough that you didn't
> destroy the catalytic converter. Now as to what could have happened.
> You could have something as little as a poor connection at either the AFM
or the O2 sensor.
> Those sliding contacts on the airflow meter can be very troublesome.
> They don't have that much "wipe" pressure and just a little corrosion
> makes them intermittent. Also, the wires break inside the insulation
> or fail at the crimp. Most true AFM issues are in fact contact issues.
> When lucky changing the part takes care of the contact problem and you
think you did good.
>
> Changing parts like this you need to learn how to test for proper
> operation including O2 sensor voltages both disconnected (open loop)
> and connected, (closed loop, in control).
>
> Dennis
>
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
> Behalf Of Dennis Jowell
> Sent: Wednesday, June 22, 2016 12:38 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: GOWESTY AFM no start problem
>
> Here we go,
> My Westy 2.2 WBX was running almost great after traveling 2500 miles
> to Ontario and back to Vermont. Decided to install the new
> reconditioned GOWESTY AFM today.
> I disconnected the O2 sensor then installed the AFM started the engine
> with the O2 still disconnected idled great. Shut everything down
reconnected O2.
> With engine warn went for a short trip on our dirt road accelerated
> engine it started to miss fire then died! Got it started at idle then
> accelerated and it died again. Got it going again, limped back to the farm
at idle only.
> Now it won't start at all! I reinstalled the old AFM and it made no
> difference. Still no start. Engine turns over, disconnected the return
> to fuel tank line fuel comes out ok. I can hear the fuel pump running.
> I think the filter and pump are working., 2 days ago I changed the
> hall sensor wring with a new connector from GOWESTY, cleaned the hall
> sensor ground lead. It ran great after that installation.
> I'm about to try the"No Start tool" wiring kit that was suggested to
> use on the site. But before i did this I thought I would ask for ideas.
>
> Dennis Jowell
> Scotch Hollow Farm
> Newbury, Vermont
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