Date:         Thu, 25 Oct 2012 12:11:40 -0600
Reply-To:     OlRivrRat <OlRivrRat@COMCAST.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         OlRivrRat <OlRivrRat@COMCAST.NET>
Subject:      Re: Random Instant Shutdown
Comments: To: mark drillock <mdrillock@COX.NET>
In-Reply-To:  <508968F5.8030404@cox.net>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes

                Mark

        Thanks a bunch for that research ~ I am leaning heavily toward the
MultiIssue possibility here ~ Considering manifestation that occurred
yesterday, with a new IgnitionSwitch plugged in, where it RISSed &
then InstantlyRestarted, I'm thinking that it could be a combo of
Faulty HallSensor & Faulty IgnitionSwitch ~ HallSensor causes the
ShutDown then the IgniSwitch won't allow the Restart until turned off
& back on to achieve GoodContact ~ We'll see.
        Considering the 217,000mi's on this Van there may be more issues than
that ~ I hope not.
                                                        ORR ~ DeanB


On 25 Oct , 2012, at 10:29 AM, mark drillock wrote:

> I just tried unplugging the distributor hall connector on an 87.
>
> The fuel pump cycles every time the key is turned on, whether the hall
> sensor is attached to the FI harness or not. I may try a couple other
> vans to see if the year or ECU version matters but it seems doubtful.
>
> I suppose a bad hall sensor could somehow trick the ECU into not
> running
> the pump at key on but seems unlikely. My guess is that I could unplug
> every sensor in the FI system and the pump would still cycle at power
> on. I am going to try it and see.
>
> There is of course some chance that he has 2 problems and the not
> cycling fuel pump is related to a second problem rather than the
> problem
> of the van dying. Unlikely but possible.
>
> Mark
>
> kenneth wilford (Van-Again) wrote:
>> I remember a van that had a problem with dying.  I was
>> troubleshooting and
>> when I turned the key on the pump didnt do its 2 second run.  I took
>> another distributor that I had and just plugged it in electrically
>> to the
>> hall sensor and then turned on the key.  It did the pre run every
>> time I
>> would turn the distributor shaft a little with my fingers.  Installed
>> distributor and that fixed it.
>>
>> I am 100% positive that this problem is the distributor (hall
>> sensor) or a
>> fault in its wiring.
>>
>> Ken Wilford
>>