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.
Truck will start run about 30 seconds then dies and will not start again have replaced both fuel pumps crank sensor spark plugs throttle body and map sensor