Date: Fri, 15 Nov 2013 11:16:22 -0600
Reply-To: JRodgers <jrodgers113@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: JRodgers <jrodgers113@GMAIL.COM>
Subject: Re: '88 GL intermittent ignition miss
In-Reply-To: <5285906B.5000304@turbovans.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
I vote for Hall Sensor failure. My 88 GL would run along just fine -
then suddenly for a moment - just die....period. hen it would catch and
go again It was a total ignition break - nothing firing. If it were a
fuel problem, I think it would sputter at least a little bit, give some
kind of warning - but mine just quit stone cold dead - then would catch
just as it began to lose speed. This went on a while - then it just died
- won't start. I'm pullling a known good distributor out of my parts car
to try out this weeekend, - but I'm almost certain it's the hall sensor.
Without the hall sensor signal the ECU doesn't know what to do.
John
On 11/14/2013 9:09 PM, Scott Daniel wrote:
> If the tach dips or the needle jiggles say ...
> my thinking would be drawn to the distributor.
>
> I'd try a known good one for a first step.
> It's mandatory in my world to have at least a known good ECU and
> distributor for self-rescue and testing.
>
> Of the Hall Senders I have seen that have failed one way or another .....
> it's been intermittent no-start cold,
> or ....power loss, stumbling, and fialure to keep running steadily after
> running a while.
>
> I had two distributors in a row do that , 1.9 ones..
> and each one took 3 hours of freeway driving before they acted up.
> ( happened at the same place on I-5 three hrs north of where I am ..
> a year apart...exact same thing with two different used distributors,
> same van. )
>
> New Hall Sender fixed it.
>
> It's nice to have another AFM too.
> All I've seen those do is run 'unevenly' after many years. Subtle
> unevenness ...
> I did have one that would allow a 1/2 second cut-out at 60 mph, but that
> was all.
>
> Scott
>
> On 11/14/2013 6:20 PM, Gregory Smith wrote:
>> Heeeeeeeeelp!
>>
>> I am pulling my hair out trying to solve an ignition miss on my '88 GL.
>> When it happens, the engine is warmed up and I'm usually just cruising
>> along. The engine stutters and the tach dips and even goes up a bit
>> sometimes. The fuel pump is good, quiet, filter is about 2 months old.
>>
>> Initially I suspected it needed and tune up and have replaced the plugs,
>> cap, rotor, and wires using the appropriate parts from Bosch. The
>> problem persisted so I replaced the ignition switch with a new one.
>>
>> The problem persisted... reading up on the symptoms I thought it might
>> be "vanagon syndrome" so I swapped in a different AFM, still there.
>> Added the proper capacitor to the AFM innards, still there. Unplugged
>> the O2 sensor... still there.
>>
>> Any ideas? Does the hall sender in the distributor do this when it's
>> failing? I think it's more of an on/off failure so I'm stumped. Thanks
>> in advance.
>>
>> Gregory Smith
>> '88 Vanagon GL
>> '77 Lancia Scorpion
>> Olympia, WA
>>
>>
>
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