Out of all the sensors in your car, the tps is the one input that the transmission uses. Or the most important one. Is there a cable that runs from the throttle body back down to the trans? If so, thats what tells the trans when to shift down during accel, but if not, then the trans computer relies on the tps.
You should notice a big difference with a good tps.
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'88 Supra Targa 5 speed w/ '90 7M-GTE 
Currently Running Good  
For Sale: Light blue body parts, Blue interior parts all from '90 supra targa turbo manual.
Also for sale: R154 trans, brake pedal, master cylinder, booster, abs actuator, sensors, abs ecu, driveshaft, 3.90 lsd rear end, radiator, wiring, speedo cable, 8 saw blade wheels, '88 ecu, relays, cruise control actuator (bad cable), empty fuel tank, etc....
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