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The throttle position sensor is on the throttle body. That's the part of the engine that controls the amount of air allowed into the engine.

To find the throttle body, follow the air intake routing toward the engine. The throttle body is the part that sits on the intake manifold.

To find the throttle position sensor, follow the throttle cable to the throttle body. If it helps, have someone press down and release the throttle pedal while you're looking for the throttle body/position sensor. The throttle cable causes a shaft to turn, that's the part that controls the air coming into the engine. The throttle position sensor is connected to that shaft.

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