Well, starting at the top, the TPS has messed up my shift points on my 93 on a previous occassion. Felt like the tranny was going out.
You can do a voltage check at pin B (center) of TPS to ground w/TPS connected and key ON. These are specs for my 93:
Throttle Position Sensor (Closed Throttle) 0.33 to 0.46 Volts
Throttle Position Sensor (Full Throttle) 4.1 to 4.2 Volts
I also like to unplug it (ign. OFF) and do a resistance (ohms) check, center pin to ground and watch while moving throttle open and closed. A dial (analog) meter shows it the best. It should be gradual change with no "jumps." Also, at idle, should get almost no resistance.
By the way, my first replacement TPS, from AutoZ, only lasted 2-yrs and a few thousand miles. Have one from NAPA in there now.
1993 Red SSE - Bone-Stock except for High Perf. Power Antenna-Original Owner. Less than 130K - Love of my Wife
'05 Magnum R/T Hemi - Bunches of classic VW Beetles... and one "not quite stock."