Robert the easiest work around to this problem is to tweak the end of
the metal finger that rides against the plastic cam.  You can do this
with a pair of needle nose pliers in a few minutes.  Simply remove the
throttle body and flip it upside down.  Remove the cover over the switch
assembly.  Now slightly bend the end of the throttle position switch
finger so that it makes a slightly wider V shape.  Flip it back over and
now your switch should work properly again.  If not tweak a little
more.  You are done in less than 5 minutes with no hassle.  I live in
the same area as you so I am very familiar with the problem of the
adjuster seizing up.  If I had to rebuild this every time someone came
in with a TPS out of adjustment I would never get anything else done.
Instead, you do this tweak, the van is back on track, and you look like
a superhero.  Got to go, have a call coming in from the Commissioner!  :-)

Ken Wilford
John 3:16
www.vanagain.com

Robert Stewart wrote:
> So I was looking to adjust the TPS recently and noticed that last year
> in Brooklyn I asked that my local mechainic told me he adjusted it
> when I told him the idle was way off. I was told they did adjust the
> TPS.  Van ran fine.
>
> Now after the rebuild of the engine and examining it, I realize that
> they damaged the adjusting screw. It is totally mangled and not usable
> any longer.
>
> Has anyone or does anyone know how to fix this?
>
> If I pull it out what size and type of screw is it?
>
> Isn't a hex screw?
>
> TIA.
>
> Robert
> NY
>