How Does Your Car's MAP Sensor Work? As mentioned, the MAP sensor is usually located on the engine air intake manifold near the throttle body.

It could readily hook up to just about any car with a simple resistive throttle position sensor, or any car with an inductive crankshaft position sensor.

The throttle position sensor monitors how far open the throttle valve (or blade) is open, which is determined by how far down the accelerator pedal has been pushed.

The throttle body is a key component of a car's fuel/air delivery system, but carbon deposits and other debris can clog up its passages and moving parts.

Your vehicle's MAP sensor plays a crucial role in keeping it performing at its best. Here's how it works and the warning signs that it might be failing.