I do NOT know if this is advisable, but ....

Did you disconnect the idle stabilizer with engine running?

Haven't read your entire post(s) but is idle affected when bucking
starts? The above may help confirm if part or wiring is at fault.

Does Bentley show test procedure for this part?

Neil.

On Wed, Jun 1, 2011 at 7:25 AM, B Feddish <uprightbassghost@hotmail.com> wrote:

> hour so I just drove my van home from work on Route 30 last evening and
> after about an hour it started bucking so hard it was un-drivable. � I
> pulled over and disconnected the idle stabilizer from the circuit and the
> van ran fine. Actually felt like a little more power.

-- 
Neil Nicholson '81 VanaJetta 2.0 "Jaco"

http://tubaneil.googlepages.com/

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines