Revs When Shifting Gears...Help

[StreetRacin89Stang]

Last night (and lately) the car has been revving when i push in the clutch to shift. This happen usally after i have gotten on the car for a lil bit. I will be shifting at say 2500 and the revs will shoot up to 3000 and come down slowly while the clutch is in. The car also holds a high idle speed in conjunction with the other problem. It might idle at 2000 and not come down. I shut the car off and it will be fine until i get on it again.
Is this a TPS problem? Do i need to reset it or bore out the mounting holes?? Any other ideas would be greatly appreciated.



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89 5.0 GT White w/Blue Racing Stripes
K&N, 73mm Mass Air, Ported and Polished Stock Heads, E303 Cam, MAC equal Length Headers, Off Road H-Pipe, Borla Mufflers, 3.73's Sway Bars, Strut Tower Brace, Subframe Connectors, Eibach Springs, Koni Adjustables/Reds, Pony 5 Stars, 1000 Watt JL Audio System, No P/S , No Smog Pump