Test for voltage at the plug connector as indicated in the photos and captions, and make sure the vacuum line to the MAP sensor isn't kinked, crushed, or leaking.

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.

The manifold absolute pressure sensor reads the amount of pressure or vacuum (also called “engine load”) in the intake manifold, where outside air is divvied up in proper amounts and ...