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 PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTSMETERING OIL PUMP STEPPER MOTOR TEST
1991 Mazda RX-7 Base, 2D Convertible, Standard
Metering Oil Pump Stepper Motor Test
1991 Mazda RX-7 Base, 2D Convertible, StandardSECTION Metering Oil Pump Stepper Motor Test
Remove sensor connector. Note terminal identification. See Fig 1 . Using ohmmeter, check resistance at specified terminals. Resistance must be within specification. See METERING OIL PUMP POSITION STEPPER MOTOR RESISTANCE table.
METERING OIL PUMP POSITION ST MOTOR RESISTANCE
| Terminal | Ohms |
|---|---|
| +B1-SM1 | 16-31 |
| +B1-SM3 | 16-31 |
| +B2-SM2 | 16-31 |
| +B2-SM4 | 16-31 |
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.