http://www.jollygreenmonster.com/help.htm
look at the ecu printout guide, block B95 (for 1992-1996) or block 136 (for 96-98), throttle position sensor.
it gives voltage readings for fully open and fully closed positions. connect a volt meter to the pins at the ecu and with the ignition on but the engine not running, adjust the TPS to give the specified voltage readings in the throttle fully open and fully closed positions