Sensors: Electrical device that measures the different performance parameters of the car.
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They are used to measure the air pressure, the temperature, the speed, the liquid level, the characteristics of the exhaust smoke, etc. They are connected to the ECU (Electronic Control Unit) and they provide the information needed to improve the engine's performance.
I have scorpio mhawk 2013 model. My engine generally vibrates and make noise more than usual. I read somewhere to check egf valve and maf sensor but i dont know how to do it.