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.
1988 Mazda RX-7 Base, 2D ConvertibleFACTORY OEM SERVICE PROCEDURE
Engine Does Not Run Smooth At Normal Operating Temperature
Check the following components or conditions:
- Stored trouble codes.
- Ignition system and timing.
- Inspect air intake system for leaks.
- Idle speed and throttle sensor.
- Primary injector operation (non-turbo).
- Main fuel line pulsations to indicate operation (turbo).
- By-pass Air Control System (BAC).
- Air control valve operation.
- Check idle mixture.
- Purge control valve.
- Coolant thermosensor.
- EGR valve operation.
- Airflow meter operation.
- Intake air temp. sensor in airflow meter.
- Fuel pressure and fuel leaks.
- ECU operation.
- Engine compression.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.