Date: Mon, 27 Jun 2016 15:50:38 -0700
Reply-To: Scott - IMAP <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott - IMAP <scottdaniel@TURBOVANS.COM>
Subject: Re: GOWESTY AFM no start problem
In-Reply-To: <BAY405-EAS2303C91BABA1D2CBE111726A02F0@phx.gbl>
Content-Type: text/plain; charset=windows-1252; format=flowed
3 simple things will advance a no-start situation very nicely, and quickly.
1. hook up a remote starter switch so you're right there by the engine !!
2. put a NOID light on one injector wire
3. arrange the coil wire so spark can jump to ground.
testing is super simple..
turn on the key, crank engine with remote starter switch.
what you want to see is ....
NOID light flashes and good strong spark jumps.
if no spark ..work on that ..distributor, plug on the side, coil etc.
If there is spark ..it's highly likely the ecu is firing the injectors
which you can see..NOid light flashes.
if it's got spark and injector pulse,
think about fuel pressure and fuel delivery.
lastly ...wet fouled spark plugs can look like a no-start .
Recently on one engine with the above scenario ...I found one spark plug
with center electrode completely GONE and and the others wet-fouled,
making it not start.
set of good plugs, running again just fine.
Scott
On 6/25/2016 11:57 AM, Dennis Haynes wrote:
> That voltage is a tad low bit indicates you don't have a short. Check the
> outer jacket for continuity to ground. Regardless this won't explain the no
> start. Usually it will start with AFM completely disconnected. Skip the AFM
> part and diagnose as a no start from scratch.
> Compression, spark, fuel.
>
> Dennis
>
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Dennis Jowell
> Sent: Friday, June 24, 2016 1:38 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: GOWESTY AFM no start problem
>
> O2 Green wire to braided wire with ignition on is .44 VDC is this correct ?
> Hope fully I understood your suggestion. This is using my craftsman digital
> multimeter.
>
> Dennis J
>
>
>
>
> Dennis Jowell
> Scotch Hollow Farm
> Newbury, Vermont
>
>
>> On Jun 23, 2016, at 7:18 PM, Dennis Haynes <d23haynes57@hotmail.com>
> wrote:
>> 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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