Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1990 Ford Probe GL, AutomaticFACTORY OEM SERVICE PROCEDURE
Throttle Position Sensor (TPS) - All Models
- Disconnect TPS from wiring harness. Scribe marks on throttle body and TPS for reassembly reference. Remove mounting screws and TPS. Slide rotary tangs of TPS into position over throttle shaft blade with wires pointing down. Rotate TPS clockwise to installed position.
- Failure to install TPS in this manner may result in excessive idle speeds. Align scribe marks on throttle body and TPS. Secure TPS to throttle assembly with retaining screws. Reconnect wiring.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.