hi Neil,
is that your engine harness connector ?
I'll pmail ya since it's barely vanagon.

Scott
----- Original Message -----
From: "neil n" <musomuso@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, October 13, 2010 11:39 PM
Subject: Re: VW OBD Handheld Code Reader Questions (Jetta conversion)

> HI Scott.
>
>
> On Wed, Oct 13, 2010 at 10:46 PM, Scott Daniel - Turbovans <
> scottdaniel@turbovans.com> wrote:
>
> Is your ABA engine OBD-I or II ?
>> Do you have an OBD diagnostic port ?
>>
>
>
> OBD1 and yes.
>
> Oddly, though the pin was present on the ECU, there was no MIL wire in the
> harness. I installed one. IIRC, Bentley notes that some early years (93'
> IIRC) didn't c/w this wire in the harness.
>
>
>
>
>> the OBD-I systems I am familiar with generally use counting flashes of
>> the
>> Check Engine light to get out basic OBD- I  one codes.
>>
>
>
>
> VW OBD1 uses flash codes too. Possibly limited to '93 and '94 MY. Jumper
> pins in the port and read the flashes.
>
>
>
>
>>  The Haynes manual on OBD-II is quite good reading, btw.
>>
>
>
>
> Good to know. I'll keep an eye out for it. Had looked on line for more
> info
> at one point.
>
>
>
>>
>> the OBD-II code reader I have now doesn't even have a way to interact
>> with
>> OBD-I that I know of.
>> I find codes useful ..
>>
>
>
> Hmm..... thanks.
>
>
>
>>
>
> intermittent anything  just tells me that circuit might be weak or wonky.
>>
>> Thanks for mentioning RossTech  freeware ,. perhaps I'll get me some.
>>
>> the pic looks like an OBD-II connector to me, the big part.
>>
>
>
>
> Yes. It has "OBD2" stamped on it.
>
> btw, here's a link to a page on Ross Tech showing differences between the
> free version and other versions:
>
> http://www.ross-tech.com/vag-com/vag-functions.html
>
>
>
>> I always start with the symtoms ......then start checking things.  Most
>> of
>> the time I can find about 3 or 4 or more,  half-not right things on most
>> engines that don't behave well that I see.
>>
>
>
> Thing is, it runs fine. But sometimes, I swear it runs *slightly* better
> than others. (slightly more power, better acceleration)
>
> On Jasons suggestion, I suspect the big 28 pin connector may have an
> intermittent connection, or, two or more wire casings in/out of it may be
> cracked a little and shorting. I checked and cleaned it again and relieved
> some of the tension on the wires by repositioning it. It was somewhat
> twisted and I suspect that if there was a slight crack(s) in a wire casing
> maybe it was shorting out there. This harness had many flaws in that
> regard.
>
> Pic or connector:
> http://sites.google.com/site/tubaneil2/28pinconnector2.jpg
>
> Neil.
> --
> Neil Nicholson '81 VanaJetta 2.0 "Jaco"
>
> http://tubaneil.googlepages.com/
>
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines