Sticking throttle?

[Mike VanAmburgh <vwvr6r@fiber.net>]

Hi all - My 88 16V developed a problem yesterday where the motor would
just rev up by itself.  The first time it happened I just figured that
the gas pedal got stuck on the floor mat or something.  Then later in
the day it happened again between my 1-2 shift.  The car revved to
redline on it's own!  I've been noticing lately too that the idle when
coming up to a stoplight for instance, has been a bit high.  For the
hell of it I stuck my foot under the gas pedal, pulled up on it and the
idle smoothed out.  So I imagine the throttle is sticking somewhere. 
Sometime it'll stick at 3k rpm, sometime at 2k, blah blah.  I've never
experienced anything like this before and was wondering where to start
looking and how to go about fixing it.  Do I need a new throttle cable
or does it just need a little lubing?

-Mike
88 Scirocco 16V
87 Cabbie

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