Date: Fri, 19 Oct 2012 10:50:48 -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
In-Reply-To: <4E188387-D168-4547-9173-75E154542E31@shaw.ca>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
Mark & Alistair
Thanks ever so much for this great bit & bunch of info ~ D15 will be
the 1st place I look when I get
back to this Van this afternoon. D15 seems to be such an essential yet
inadequate connector that it should
probably be at, or @Least near, the top of the RoutineThingsToCheck
list for those of us that enjoy trying to
keep these Beasts running ~ I'm surprised I haven't seen "Remember
D15" show up often on the Vanagon
related Lists, Forums & Blogs.
Thanks much again ~ I'll keep you posted as to what I find.
ORR ~ DeanB
On 19 Oct , 2012, at 7:27 AM, Alistair Bell wrote:
> To add to Mark's comments on the D15 issue, see my blog post about
> what I found at that connector
>
> http://shufti.wordpress.com/2011/11/02/vanagon-d15-connector-issue/
>
> alistair
>
>
> On 2012-10-19, at 5:26 AM, mark drillock wrote:
>
>> If you have ready access to a spare then swap the ECU but keep an
>> open
>> mind. A simple wiring fault could be involved. If you don't hear the
>> fuel pump when you turn the key back on after it dies you can forget
>> worrying about the hall unit of the distributor.
>>
>> There is a known failure point in the 86+ dash fuse/relay panel where
>> the wire connects for the ignition on signal that runs back to the
>> engine compartment. Pin D15 of the panel gets cooked over time and
>> then
>> doesn't always make a reliable connection. If this is your problem no
>> amount of parts swapping in the engine compartment is going to fix
>> it.
>>
>> From the ignition switch a black "ignition on" wire goes to the dash
>> fuse/relay panel and then leaves again on pin D15. From there it is
>> part
>> of the main wiring bundle that heads back to the engine compartment
>> wiring box. The black wire continues on to the ignition coil to power
>> it, and then branches off to power up the ECU relay and enable the
>> fuel
>> pump relay.
>>
>> For testing purposes you can run a wire from the alternator power
>> stud
>> to the ignition coil where the black wire attaches. There should be a
>> free male spade available there next to the black wire that comes
>> from
>> the ignition switch. This will immediately power on the coil and ECU
>> relay so the key switch won't be able to turn the system on or off
>> while
>> the test jumper wire is in place. I would put a fuse holder in the
>> jumper wire at the alternator end. Then use the fuse to turn the
>> power
>> on and off as needed. I'd use no more than a 10 amp.
>>
>> Mark
>>
>>
>>
>> OlRivrRat wrote:
>>> Hey All Here's one for ya
>>>
>>> A NonMech' good friend has an '89 4spd2wd H2OBxr with
>>> 217000mis
>>> ~ It
>>> will start just fine & idle & run just fine for a Random period of
>>>
>>> time then instantly shutdown as if the key was turned off ~ then in
>>> most cases it will start right back up again. On the occasions
>>> that it
>>> doesn't
>>>
>>> start right back up I can tell that the FuelPump is not doing the
>>> PreStartRun but then after a few tries or a short wait does come on
>>> when Key is
>>>
>>> turned to Start & will then FireUp&Run.
