Throttle switch won't do that. Bad/weak O@ sensor or the wiring to it.
The green shielded cable going to it will sometimes crack and when water
gets in there, the O2 sensor gets partially shorted out. Since flooring
the throttle brings back some power, the throttle switch is there and
working. At full throttle and open AFM, the O2 sensor is ignored.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of Warren Lail
Sent: Wednesday, February 16, 2005 10:35 PM
To: vanagon@GERRY.VANAGON.COM
Subject: cleaning engine upsets throttle body switch

I put the tranny back in Billy Bones (don't ask) and drove it around a
bit.  Then decided to clean my engine.  Each time
I clean the engine I develop a problem with the throttle body switch.
Is there some way that water gets into the switch
or switch contacts and causes this problem?  The problem persists long
after the engine dries.

The engine starts fine, then you take off and it seems to run out of
gas.  Then you can either turn the ignition off and
restart and it will run fine, or you can slam full throttle and it will
take off like a rocket (well, sort of).  It is in the middle
range where it does not want to run, which suggests that the throttle
switch is not triping or is shorted out with water
or something.  Once you drive around for several miles it clears up, but
shut it off and let it cool down and you have to
go through this process again.

Ideas?

Thanks.

Warren Lail
88 Westy "Billy Bones"