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Intake air temperature sensor: common defects and their signs

Mechanical damages of the sensor.
- Failures appear at engine idling operation.
- Fuel consumption increases.
- Engine start is difficult in cold season.
Corrosion.
- Engine power decreases.
- “Check Engine” indicator lights up on the instrument panel.
- The engine stalls during driving.
Breakdown of sensor power supply wires.
- Car dynamic performance worsens.
- Unstable engine rpm during idling.

How to replace intake air temperature sensor?

It is not recommended to perform cleaning of the soiled intake air temperature sensor for restoration of its operability. There is a risk of damaging the external terminals, and effect from cleaning will not last long.

It is recommended to replace the sensor if defect signs are found. Replacement can be performed by yourself, as it is quite simple. The procedure may vary for cars of different models, depending on component location. It may be mounted inside the intake manifold, inside the air filter body or behind it. That is why, before starting works, study technical documentation of the car.

Generally, to replace the car intake air temperature sensor you will need to: