The Manifold Pressure Sensor (also known as the Manifold Absolute Pressure Sensor or the Manifold Differential Sensor) is a device that is used to calibrate the fuel delivery on most modern ECU...
It takes a special socket that sometimes you can rent from the parts stores. Or you can buy them for about $10.
Buy a specail socket from an auto parts store for O2 sensor. Make sure you upplug the...