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.
Intake Air Temperature (IAT) Sensor
Turn ignition off. Locate IAT sensor on intake manifold. Unplug connector from sensor. Measure resistance between sensor terminals at temperatures specified. See the INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE table. Replace sensor if resistance is not as specified.
| Temperature - °F (°C) | Ohms | ||
|---|---|---|---|
| -22 (-30) | 20,000-30,000 | ||
| 14 (-10) | 7000-11,400 | ||
| 68 (20) | 2100-2900 | ||
| 104 (40) | 1000-1300 | ||
| 140 (60) | 565-670 | ||
| 176 (80) | 295-365 | ||
| 194 (90) | 240-260 | ||
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NO RELATED
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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.