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.
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HOMESERVICE MANUALSTOYOTA1988VAN BASE, VAN PASSENGERREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMCOMPUTER CONTROL SYSTEMOPERATIONDATA SENSORSTHROTTLE POSITION SENSOR (TPS)
1988 Toyota Van Base, Van Passenger
Throttle Position Sensor (TPS)
1988 Toyota Van Base, Van PassengerSECTION Throttle Position Sensor (TPS)
Throttle Position Sensor (TPS) is mounted on throttle body. Sensor determines changes in throttle valve positions and send signals to the ECU. Signals are used for controlling fuel injection duration and idle speed control system.
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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.