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 MANUALSMAZDA1991RX-7 BASE, 2D CONVERTIBLE, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROLS - ADJUSTMENTSTHROTTLE POSITION SENSOR (TPS)RX7ADJUSTMENT
1991 Mazda RX-7 Base, 2D Convertible, Standard
Throttle Position Sensor (TPS): RX7: Adjustment
1991 Mazda RX-7 Base, 2D Convertible, StandardSECTION Adjustment
- Warm engine to normal operating temperature. Turn off engine. Connect Checker Light (49F018001) to Green 3-pin test connector. See Fig 1 . Turn ignition on.
- If one of the lights comes on, TPS is adjusted. If both or neither lights come on, turn the TPS adjusting screw until only one of the lights comes on. See Fig 2 . Replace TPS if it cannot be adjusted.
TPS VOLTAGE
| Terminal | Voltage - Throttle Closed | Voltage - Throttle Full |
|---|---|---|
| 2F (Narrow Range) | .75-1.25 | About 5 |
| 2G (Full Range) | .25-1.25 | 4.1-4.4 |
RENDER: 1.0x
NO RELATED
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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.