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Throttle Body

Fig 1: Identifying Throttle Body

Courtesy of VOLVO CARS CORPORATION

The throttle body is made of cast aluminum. The position sensor, which is located under the plastic cover, reads the position of the throttle disc and two engine connections that turn the throttle disc. The throttle disc position is determined by how much the driver depresses the accelerator pedal. The throttle body is warmed via engine coolant.