The current O2 sensor is a fairly new one, official VW type with
shield and factory cable and connector.

I think I need to get the 'ol test meter out and check connections and
grounds.

John

John Rodgers
Clayartist and Moldmaker
88'GL VW Bus Driver
Chelsea, AL
Http://www.moldhaus.com

On 12/27/2010 5:20 PM, Dennis Haynes wrote:
> The O2 sensor ground reference is through the brown wire in the hall sensor (distributor) harness .
>
> Dennis
>
> Sent from my Windows Phone
>
> -----Original Message-----
> From: Evan Mac Donald
> Sent: Monday, December 27, 2010 4:34 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Progressive rough running - until ignition reset
>
>
>
>> There is a ground that isn't. It ismost likely at the ECU.
>>
>>
>>
>>
>> ________________________________
>> From: John Rodgers<inua@CHARTER.NET>
>> To: vanagon@GERRY.VANAGON.COM
>> Sent: Mon, December 27, 2010 3:46:25 PM
>> Subject: Progressive rough running - until ignition reset
>>
>> Volks,
>>
>> I have a general Vanagon troubleshooting question - today driving home
>> from an enjoyable Christmas gathering with all my family,  the van
>> engine started twitching - a little skip at first, then as the miles
>> rolled it got worse and worse. I was sweating getting home in all that
>> snow and rain and raw weather we were having, and sure as heck didn't
>> want to stall out and spend time on the side of the road in that
>> weather. I managed to make it off I-65 at the southern exit onto Shelby
>> Co 25 on towards Columbiana. By the time I got to the last hill just
>> outside town - I was down to about 10 miles an hour, and coasted down
>> that hill into town to the main stoplight. The plan was to go through
>> the light on green, and pull over in a BigBox store parking lot. Didn't
>> get the chance. Light changed, and the engine stalled. I turned off the
>> wipers, the heater fans, and the head lights, shut off the ignition, and
>> then hit the switch again. She fired right up, purring like a kitten. No
>> more trouble......... until well up the road. Same thing over again.
>> Just a little twitchy at first, then got progressively rough. This time,
>> while coasting, I turned the switch off, and back on. The engine cleared
>> it throat, and purred like a kitten. Did it twice more before I got home.
>>
>> So - what could be happening that turning the ignition off and back on,
>> results in temporary clearing the problems. At first I thought fuel,
>> then some king of ignition trouble, then an electrical fault for sure.
>> Electronics somehow.
>>
>> Any ideas??
>>
>> Thanks,
>>
>> John
>>
>> --
>> John Rodgers
>> Clayartist and Moldmaker
>> 88'GL VW Bus Driver
>> Chelsea, AL
>> Http://www.moldhaus.com
>>
>