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 TESTSOIL PRESSURE SWITCH TEST (NON-TURBO A/T)
1991 Mazda RX-7 Base, 2D Convertible, Standard
Oil Pressure Switch Test (Non-Turbo A/T)
1991 Mazda RX-7 Base, 2D Convertible, StandardSECTION Oil Pressure Switch Test (Non-Turbo A/T)
- Remove switch. Using an ohmmeter, check for continuity between switch casing and switch connector terminal while applying air pressure to switch.
- Continuity should be present when pressure is less than 7.1 psi (0.54 kg/cm2 ) and continuity should not be present when pressure is greater than 43 psi (3.0 kg/cm2 ). If switch does not operate within specifications, replace switch.
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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.