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.
1987 Mazda RX-7 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Airflow Meter
Visually check airflow meter body for cracks or damage. Using an ohmmeter, check resistance between airflow meter connector terminals. See Fig 1 . See AIRFLOW METER RESISTANCE specification table for resistance values.
AIRFLOW METER RESISTANCE
| Terminal | Ohms | |||
|---|---|---|---|---|
| E2 to Vs | ||||
| Non-Turbo | 50-500 | |||
| Turbo | 200-600 | |||
| E2 to Vref | ||||
| Non-Turbo | 200-500 | |||
| Turbo | 200-400 | |||
| E2 to THAa (1) | ||||
| -4°F (-20°C) | 10,000-20,000 | |||
| 32°F (0°C) | 4000-7000 | |||
| 68°F (20°C) | 2000-3000 | |||
| 104°F (40°C) | 900-1300 | |||
| 140°F (60°C) | 400-700 | |||
| E1 to Fc | Infinity | |||
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Factory Service Tools
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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.