I was wrong! Hopefully the "tone" of my reply below did not come
across as anything but neutral.

While in camp at Bayview State Park in Washington, I did some more
testing on the faulty ECU with my digital Volt Ohm meter.  (this is
NOT the right thing to do but since the ECU is already damaged, I saw
no issue doing so)

By setting the resistance scale higher on my meter, I was then able to
see continuity between various main negative ("grounds") pins on the
ECU and the ECU metal frame. This now makes sense. Especially since
there's a series of metal tangs that connect from this frame, to the
metal shield inside the ECU. I'd assumed the exposed metal of the ECU
was ok connecting to the vehicle frame, but given the way it was
fastened to the Jetta, and my (incorrect) previous meter readings, I
was mislead.

If it's ok with the list moderators, I'll post some ECU circuit board
images later.

The engine ran really well and got me home w/o further issue. List
help has been much appreciated!

Neil.

On 9/9/14, SDF ( aka ;jim lahey' - Scott ) <scottdaniel@turbovans.com> wrote:

> OK.
>
> On 9/9/2014 11:13 AM, Neil N wrote:

 .....

>> Of course I'm not disagreeing with you, but just to explain my logic,

.....

--
Neil n

Blog: tubaneil.blogspot.ca

'88 Westy http://tinyurl.com/c8rlw6p

'81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/

Vanagon VAG *Gas* inline-VR Engine Swap Group:

http://tinyurl.com/d7gd5ej