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Why would a 1994 Isuzu truck with a 2.3 carb engine need a throttle position sensor?

Why would a 1994 Isuzu truck with a 2.3 carb engine need a throttle position sensor?

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Technically all vehicles went to a throttle position sensor in the late 1980s, the early years of fuel injection/throttle body injection. The TPS sensor took the place of throttle cables and sends a signal to the computer that is working in conjunction with many other components. Although your vehicle may have a carburetor it is still controlled by computer components.

—Gerald Wheelus
Edgewood Auto Parts #253, Edgewood, Texas

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