Date: Fri, 23 Jul 2021 18:43:29 -0700
Reply-To: vw_van_fan_Mark <madvws@COX.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: vw_van_fan_Mark <madvws@COX.NET>
Subject: Re: Another Crank but No Start/No Spark
In-Reply-To: <8291C618-C43E-416D-BEE8-4081641E57EA@comcast.net>
Content-Type: text/plain; charset=UTF-8; format=flowed
I've seen that failed alternator power wire problem a bunch of times
over the years.
That is one reason why I built the "wiring bypass tool" years ago.
People can spend a lot of time fruitlessly swapping parts and chasing
wild geese.
There are various failure prone wiring spots that can prevent the engine
from running. Often the problem comes and goes and defies simple voltage
checks.
The tool bypasses a lot of potential problem areas all in one go.
If installing it solves the problem then you still need to pin down
which wiring fault your van has and fix it but you won't spend time and
money replacing parts that won't help.
Details with photos of my "wiring bypass tool" can be found on TheSamba.
https://www.thesamba.com/vw/forum/viewtopic.php?t=349429&highlight=wiring+bypass+tool
Almost every waterboxer van is ready for a new alternator harness.
They are not expensive and they can prevent a lot of surprises on the road.
Mark
OlRivrRat wrote:
>>
>> On 21 Jul , 2021, at 5:02 PM, vw_van_fan_Mark <madvws@COX.NET> wrote:
>>
>> While it is a bit of a long shot, I'd examine VERY closely the wiring
>> ends at the alternator main power stud.
>> Failures there can cause the van that was just running to not start
>> again after a stop.
>
> VWVFM
>
> Thanks much for that sugestion ~
>
> Shuda Looked There 1st > Wire from there to BlackBox B+Post was Well Toasted,
>
> had lost Lots of Its insulation way far into its plastic shield & had become disconnected
>
> from Its Ring Terminal ~ When I removed the Larger Wire from Alt’+ & attempted to
>
> straighten a sever bend It had due to being mounted incorrectly on Alt’, Its RingConn’
>
> pulled off in My fingers > Obvious Bad Crimp There ~ @ 1st Look when Van arrived the
>
> Relays, FuelPump, IACV were All functioning so guessing the BlackBox B+ Wire was just
>
> HangingOn @ Alt' by a Few Strands ~ That might explain why after few Hr’s of Tests &
>
> Parts Swaps the Symptoms Got Worse ~ Any ideas what might have been the cause of
>
> excessive heat in wire to BlackBox B+ ~ Damage did not appear fresh & may very well
>
> have happened over time ~
>
>
>
> Thanks
>
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