Typically, the temperature readings should be 10 degrees more or less than the vehicle’s ambient temperature, depending on the outside temperature and the engine’s temperature. Check the live data and check the temperature of the IAT sensor.You can do it yourself if you have some basic knowledge and the tools available to you. The diagnostic procedure of checking if the IAT sensor has failed is relatively easy.
4.3 coolant temp sensor location manual#
The best way to locate the IAT sensor in your vehicle is to refer to the service manual provided by your manufacturer. The intake air temperature sensor’s location is not standard due to different locations in a variety of designs. Often, it is also installed on the intake manifold. It is often integrated with the MAF Sensor. The Intake Air Temperature Sensor is located somewhere on your intake pipes between the air filter and the intake manifold. It ensures optimum combustion and efficient fuel consumption. The computer system of your engine or the PCM requires this information to stabilize and regulate the combustion engine’s air-fuel ratio. This information is beneficial for the engine control unit or ECU for many functions and calculations, such as calculating the air density for effective ignition timing and fuel efficiency. The intake air temperature sensor or IAT sensor has the core function of monitoring the air temperature entering the engine of your vehicle. What is an Intake Air Temperature Sensor? If you notice a different fuel consumption than normal, it can be because of a failed IAT sensor. The engine control unit relies on the IAT sensor’s information, and if a false signal is sent, the fuel efficiency decreases or increases significantly. In normal conditions, the engine computer constantly adjusts the fuel and air level mixture to ensure maximum fuel efficiency. Due to a faulty IAT sensor, the function of the EGR valve can be affected too.Īn EGR valve that does not function properly can cause a lot of strange symptoms in your car. 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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