Magic harness is VW part number 025 906 302A
I think this would help with your problem. It was developed just for
this symptom.
It is pricey at VW dealers (no kidding).  BusDepot has them at lower
prices.

Laurence Smith

> -----Original Message-----
> From: Vanagon Mailing List
> [mailto:vanagon@gerry.vanagon.com]On Behalf
> Of Jamie Ayotte
> Sent: Monday, January 14, 2002 11:50 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: loss of power at highway speeds...
>
>
> hey hey,
>
>  i have searched the archives and have done alot to figure
> out the problem.
> the problem:  my 87 westy drives GREAT aound town and
> anywhere as long as
> i'm not at 65-70 for any extended period of time (20-30
> mins.)  as soon as i
> reach that point, it starts to lose power and sort of buck
> and skip. not to
> mention, very poor gas mileage.  i shut it off, start it
> back up and it's
> okay, for about 20 mins or so.   i have: changed the o2
> sensor, the temp
> sensor (the one below the thermostat) the fuel pressure
> regulator, the
> ignition coil, the fuel pump & filter, added a fuel filter
> in front of the
> pump... all based on recommendations in the archives.  does
> anyone think
> that it is the"magic" harness that will solve this? and if
> so, what is that
> part called?  and where would i get one?
>
>
> Thanks again!
>
> Jamie
> 87 westy
> 78 vespa
> 98 golden retriever
>