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 PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SYSTEM/COMPONENT TESTS
1991 Mazda RX-7 Base, 2D Convertible, Standard
Engine Controls - System/Component Tests
1991 Mazda RX-7 Base, 2D Convertible, StandardSECTION Engine Controls - System/Component Tests
- Introduction
- Air Induction Systems (Turbocharger)
- Variable Dynamic Effect Intake (VDI) System (Non-Turbo)
- 6-Port Induction System (Non-Turbo)
- Engine Sensors & Switches
- Back-Up Light & 5TH Switch (M/T, Non-Turbo)
- Back-Up Light & 5TH Switch (M/T, Turbo)
- Brake Light Switch
- Clutch Switch (M/T) Test
- Coolant Temperature Switch Test
- Coolant THERMOSENSOR Test
- Heat Hazard Sensor System Check
- Metering Oil Pump Position Sensor
- Metering Oil Pump Stepper Motor Test
- Neutral Switch (M/T) Test
- Oil Pressure Switch Test (Non-Turbo A/T)
- Oxygen Sensor (O2) Check
- Power Steering Pressure Switch Test
- Pressure Sensor Test
- Throttle Position Sensor
- Vehicle Speed Sensor
- Relays, Solenoids, Motors & Modules
- Fuel Delivery System
- Fuel Control System
- Idle Control System
- Idle Speed Control (ISC) System
- Ignition System
- Emission Systems & Sub-Systems
- Air Injection
- Air Control Valve
- Air Pump
- Converter Air Line Check Valve
- Intake Manifold Check Valve
- Port Air Solenoid Valve (Non-Turbo)
- Port Air Solenoid Valve (Turbo)
- Relief Solenoid Valve (Non-Turbo)
- Relief Solenoid Valve (Turbo)
- Relief Solenoid Valve Signal Check
- Split Air Solenoid Valve (A/T Non-Turbo)
- Split Air Solenoid Valve (M/T Models)
- Switching Solenoid Valve
- Switching Solenoid Valve Signal Check
- Deceleration Control System
- Fuel Evaporation System
- Positive Crankcase Ventilation (PCV) System
- Miscellaneous Controls
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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.