In some cars, the engine control unit uses air temperature to control the EGR valve operation. If you can feel this on acceleration, there may be a problem with your IAT sensor. You can feel misfires as hiccups or interruptions while you accelerate.

This can be caused by either a faulty spark or a wrong air-fuel mixture. Misfires occur when the combustion inside the engine cylinder fails. If you experience some small hiccups on idle, it can be a faulty IAT sensor. This is also a condition when you can feel the faulty air intake temperature sensor’s slightly faulty air-fuel mixture. Idle is also one of these conditions when the engine is susceptible to the right air-fuel mixture. If your intake temperature sensor makes the engine control unit inject the wrong amount of fuel, you might find it a tough time trying to start your car. Your car needs a lot of and the correct amount of fuel. The starting condition is a very critical moment for your car. A false signal may cause the PCM to miscalculate the air and fuel mixture, resulting in a drop in acceleration.Ĭolder temperatures require more fuel, which the engine control module is programmed to calculate. Drop in Accelerationĭue to a faulty intake temperature sensor, the engine control module may think that the engine’s air is colder or warmer than it actually is.

If you notice a check engine light on your dashboard, check the trouble codes with an OBD2 scanner or let your mechanic do it. The engine control unit heavily monitors all sensors in a car engine, and if one fails, it will light up the check engine light immediately. The check engine light will often appear on your dashboard when you have any issues with the IAT sensor. This is just a quick overview, and if you want to learn more specific information, here is a more detailed list of the signs of a bad or failing intake air temperature sensor to look for: 1. The performance signs you may notice are slow acceleration, hard cold start, rough idle, or misfires. The most common symptoms of a bad intake air temperature sensor are engine performance issues and a check engine light on the dashboard. Conclusion Symptoms Of A Bad Intake Air Temperature Sensor (IAT)

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