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.
1986 Mazda 626 BaseFACTORY OEM SERVICE PROCEDURE
Intake Air Temperature Sensor
- Remove air cleaner cover and place thermometer near sensor. Using a heat lamp, heat intake air temperature sensor and observe temperature on thermometer. Using an ohmmeter, check resistance between terminals "THA" and "E2". See INTAKE AIR TEMPERATURE SENSOR SPECIFICATIONS table.
- If readings are not within specifications, replace airflow meter assembly. If readings are correct, check wiring harness for short or open circuits.
INTAKE AIR TEMPERATURE SENSOR SPECIFICATIONS
| Air Temperature °F (°C) | Resistance (Ohms) |
|---|---|
| -4 (-20) | 13,600-18,400 |
| 68 (20) | 2205-2690 |
| 140 (60) | 493-667 |
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.
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