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
>>>>> 
>>>>>>> 
>