Been just testing tgat ground   Probing with meter and tugging wire. Seems solid.

I think the seat belt bolt close by would be adequate. It’s a good body ground .

But I’m dithering….

> On Apr 22, 2023, at 1:21 PM, OlRivrRat <OlRivrRat@comcast.net> wrote:
> 
>         IMHO it might very well be a good idea to run a ground wire all the way
> 
> from the ECU to Eng Block & Eng Bay Grounds just to be absolutely sure that
> 
> the ECU has a Great Circuit to essential data ~
> 
>                                                                ORR ~ DeanB
> 
> 
>> On 22 Apr , 2023, at 1:46 PM, Dan N <dn92610@GMAIL.COM> wrote:
>> 
>> Quite long ago, I came across a suggestion to add a ground wire from the
>> ECU box to the body (under the bench, right side). I didn't have any
>> problem but I did that anyway... so all my vans have that ground wire.
>> You may want to try that.
>> 
>>> On Sat, Apr 22, 2023 at 12:38 PM Alistair Bell <ragnarhairybreeks@icloud.com>
>>> wrote:
>>> 
>>> It’s a bit of a long story so I’ll trim out a lot of what I did…. Take it
>>> as read that I did redo grounds, terminals, check basics, did Bentley.
>>> Yadda yadda, you know.
>>> 
>>> And a perhaps related issue that I fixed a few years ago… that was an
>>> annoying stumble and jerking, have to floor then pedal to get going… that
>>> only occurred on summer trips on logging roads. Never in town, and didn’t
>>> happen every trip.
>>> 
>>> Did all the stuff you can imagine to track that down. Wasn’t successful.
>>> But it went away after I did two things. Did the capacitor fix in AFM ( was
>>> not classic vanagon syndrome but I thought why not) and I reflowed a solder
>>> joint on one of the power transistors in the ecu. Did that after van died ,
>>> dead, one day. After a fair bit of work I found a bad joint in ecu.
>>> 
>>> That was 4 years ago, the ecu fix.
>>> 
>>> This last winter I started to have occasional bucking again. This time
>>> around town. Not quite the same as before. But was getting worse. Only
>>> happened after 15 min driving. Also the van felt sluggish all the time.
>>> Sluggish pick up from stop. Felt lacking in power at low rpm.
>>> 
>>> Got worse and a week or so ago got so bad I had to pull over. Van idled
>>> high, about 1500 , tach bouncing at 3500!
>>> 
>>> Something really wrong. Let the van sit for 20 minutes and I could make it
>>> home. Only bucking at the end of that short drive .
>>> 
>>> For some reason I suspected the ecu again.  So I pulled and looked. I’m no
>>> expert, but I found what looked like an iffy solder point on the board.
>>> Reflowed that one, and some others that probably good but thought why not.
>>> 
>>> Ecu back in and van started. Test drive for 30 min and all good.
>>> Drivability great. Nice throttle tip in, smooth, no sluggish start, no
>>> bucking.
>>> 
>>> Happy guy.
>>> 
>>> Next morning , start and back up in drive to turn, dies. Cranks but no
>>> start. Jeeze…..
>>> 
>>> Catches for a sec, dies.
>>> 
>>> Crank crank
>>> 
>>> Finally I reseat the ecu connection and it starts.  Idles high agajn and
>>> Tach bounces. I swap in spare coil, same .
>>> 
>>> I fiddle with ground wire to ecu, the ecu harness, the connector. Starts,
>>> runs great.
>>> 
>>> All this last week it’s run sweetly. Really nice. I mean like a new van.
>>> 
>>> So what’s the deal? I did look carefully at the ecu board where the main
>>> connection comes in. I couldn’t see any issue. My ecu ground wire might be
>>> the issue. On my van it disappears behind the rear bench side wall and I
>>> can’t get at it without pulling the bench. This weekend I will look at the
>>> harness side of the connection and see if I see anything. Also I’ll sister
>>> a new ground.
>>> 
>>> Obviously I’m not confident about my “ fix “ so far. But I tell ya, the
>>> van is running better than I can remember it running. You know that jerking
>>> sometimes at low speed , trailing throttle? Ad if you have the tps mis
>>> adjusted? I was also getting that on occasion before the fix. Believe me ,
>>> I have done lots to try and have my tps working well. Rebuilt throttle
>>> body, it’s in great shape, switch good etc. been a bug bear of mine that it
>>> seemed to not be working at times. I now think it’s was always fine, it was
>>> the ecu.
>>> 
>>> I know there will be comments about this, did you check this or that etc.
>>> but please believe me I’ve gone thru a lot of time and part swapping to no
>>> avail.
>>> 
>>> 
>>> Ab
>>>