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 MANUALSMAZDA1991MX-6 L4-2184CC 2.2L SOHC TURBO F2REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORDESCRIPTION AND OPERATION
1991 Mazda MX-6 L4-2184cc 2.2L SOHC Turbo F2
Throttle Position Sensor: Description and Operation
1991 Mazda MX-6 L4-2184cc 2.2L SOHC Turbo F2SECTION Description and Operation
The Throttle Sensor is a potentiometer attached to the throttle body and splined to the throttle shaft. The potentiometer rotates with the shaft as the throttle opens and closes. Varying potentiometer resistance alters the reference voltage supplied by the ECU, allowing it to read throttle valve opening angle. This input is used in ECU calculations for these outputs:
^ Fuel injection quantity and timing
^ Idle speed control
^ EGR vent and vacuum solenoid valves
^ Pressure regulator solenoid valve
^ Purge control
^ Ignition timing control
RENDER: 1.0x
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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.