Nice thing to check...
I never do though ..
I seldom use full, full 100 % throttle..
and it doesn't really match his symptom..
though he could try WOT just to see what happens..

if you've ever driven a van or car where she just 'wont' go...but if you
feather off the throttle just right ..
she will...
then you know exactly what he's experiencing.
and he could try 100 % WOT of course..
though when you're trying to do 75 % throttle and you're 'loosing' ..
and you 'get some back' by dropping down some in throttle opening ...
often one would not then  try WOT  usually.
but one could for sure.
Can't hurt anyway.

----- Original Message -----
From: "Kenneth Lewis" <kdlewis@NORTHSTATE.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, September 27, 2011 5:52 AM
Subject: Re: HELP-- 45 MPH @ WOT ???

> TJ,
>
> For grins and giggles, ascertain if the throttle position sensor is
> activating at WOT.
> I would check it at the ECU connector.
>
> Ken Lewis