Hey Joel,

I am in the  process of tracking my own bucking. I knew that I had exhaust
leaks, but figured.....nah they could not be the cause. Then I got some
schooling in something rather simple. If there are leaks before that o2
sensor some weirdness is expected. It turns out that my rear pipe was
severed across its circumference. That would explain a lot. Check your
exhaust system for major leaks. Look at your wires and plugs and don't
forget to check your fuel filter.

Good Luck,
T.

On Mon, Jul 6, 2009 at 6:27 AM, Joel Cort <joel_cort@yahoo.com> wrote:

> Hey gang,
>
> I'm trying to help out a buddy with a 86 2.1Ltr. Westy.
>
> The van idles great hot or cold and starts right up.
>
> While driving along all the sudden it will hicup and miss loosing all RPM
> under load. And pick right back up.
> When slowing down to take a turn and picking up speed it will buck and miss
> with some backfiring.
>
> I have checked the wiring and it all looks good. I have also checked and
> replaced the easy things like:
> New TempII sender and
> I swapped a good AFN (out of my van) AFM
> A good Idle Stabiliser relay
>
> but the symptons are still there.
>
> Any hints where and how to track this gremlin down?  I will swap the brain
> next and the O2 is new.
>
> Thanks,
>  Joel Cort
> Rochester NY.
>
> 89 Syncro Westy (CinnabarVan)
> 87 Syncro Transporter (Stella)
> 73 Westy Campmobile (agent orange)
>
>
> Founding Member of the Empire VW Camping Club
> &
> Westies at Watkins - www.westies-at-watkins.org
>
>
>
>

--
82 Scirocco "Rodolfo"
85 Vanagon "Blubrik, El Guapo"