Adding a soldering iron to my on-board tool kit, thanks to you sharing your adventure!

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Alistair Bell
Sent: Wednesday, April 1, 2020 1:15 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Update Re: Engine died, March 31 update and maybe ecu smoking gun?

Yes the strange times did add a dimension to the event.

But golly, was so lucky to breakdown within pushing distance of work, and it wasn’t somewhere else.

God forbid it happened on a logging road.

Alistair 

> On Apr 1, 2020, at 10:05 AM, Steven Johnson <sjohnso2000@gmail.com> wrote:
> 
> Bravo!  Congratulations!  And thanks for giving me something to look
> forward to reading
> during these strange times....
> 
> Steven
> 91 Westy
> 
>> On Tue, Mar 31, 2020 at 5:38 PM Alistair Bell <albell@shaw.ca> wrote:
>> 
>> I want that tee shirt :-)
>> 
>> Ab
>> 
>>>> On Mar 31, 2020, at 5:21 PM, stuartmacm@gmail.com wrote:
>>> 
>>> Congrats Alistair! You fixed you Vanagon with a soldering iron!  I bet
>> that's what ECU rebuilders do.
>>> 
>>> -----Original Message-----
>>> From: Vanagon Mailing List <vanagon@gerry.vanagon.com> On Behalf Of
>> Alistair Bell
>>> Sent: Tuesday, March 31, 2020 5:17 PM
>>> To: vanagon@GERRY.VANAGON.COM
>>> Subject: Re: Update Re: Engine died, March 31 update and maybe ecu
>> smoking gun?
>>> 
>>> It worked!
>>> 
>>> Thank you very much mark for all your help.
>>> 
>>> Alistair
>>> 
>>>>> On Mar 31, 2020, at 5:04 PM, vw_van_fan_Mark <madvws@cox.net> wrote:
>>>>> 
>>>>> No, bottom left is pin 25.
>>>>> Pin 25 is the ignition coil trigger from it's driver transistor.
>>>>> That check mark for the middle pin of the transistor appears to show
>> that your bad solder joint is for the pin 25 signal as hoped.
>>>>> 
>>>>> Mark
>>>>> 
>>>>> Alistair Bell wrote:
>>>>> Ok, did that.
>>>>> 
>>>>> And apologies for the confusing way I noted results.
>>>>> 
>>>>> The board tested in orientation shown, the red tape and black marks
>>>>> refer to the pin orientation and results.
>>>>> 
>>>>> From pin mark outwards, too and bottom, check mark means continuity,
>>>>> check plus asterisk means brief continuity. Dash mark means no
>> continuity.
>>>>> 
>>>>> Started with transistor leg on right. Marks on tape closest to pin
>>>>> marks. Working ext was middle leg, and finally left leg.
>>>>> 
>>>>> I think, if I’ve rotated things in my head correctly, the pin marks
>>>>> are too left 13, top right 1 Bottom left 14 , bottom right 25
>>>>> 
>>>>> If that’s right, nine of your suggested pins have continuity to any
>>>>> of the legs of the trans.
>>>>> 
>>>>> https://shufti.files.wordpress.com/2020/03/3e721a30-3d1c-42e2-9f2a-19
>>>>> 2eb14ad5a1.jpeg
>>>>> 
>>>>> 
>>>>> The transistor as I measured, right leg first, then middle then left
>>>>> 
>>>>> https://shufti.files.wordpress.com/2020/03/cb7b8634-ac9f-4345-b857-3a
>>>>> 8a061a9e54.jpeg
>>>>> 
>>>>> 
>>>>> Ab
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>>>> On Mar 31, 2020, at 4:17 PM, vw_van_fan_Mark <madvws@cox.net> wrote:
>>>>>> 
>>>>>> For fun you could use an Ohm meter to see if that transistor
>>>>>> connects to the ECU pin that drives the ignition coil.
>>>>>> Put a meter probe on each of the three legs in turn and test the ECU
>>>>>> pin(s) with the other probe.
>>>>>> 
>>>>>> I would look at ECU pins 25, 12 3
>>>>>> to see if any leg of that transistor connects to any of those pins.
>>>>>> 
>>>>>> The driver transistor for the fuel injectors is the one I'm used to
>>>>>> seeing a bad connector at.
>>>>>> 
>>>>>> Mark
>>>>>> 
>>>>>> Alistair Bell wrote:
>>>>>>> That black component that had the one leg solder joint broken is
>>>>>>> BUV37B
>>>>>>> 
>>>>>>> Looked up and it’s , if I read it right, a power transistor.
>>>>>>> 
>>>>>>> Alistair
>>>>>>> 
>>>>>>>>> 
>>> 
>>