F 150 Heritage 4WD Pickup V8-5.4L SOHC VIN Z Bi-fuel (2004)
Manifold Pressure/Vacuum Sensor: Description and Operation
Bi-Fuel LPG Models
MANIFOLD ABSOLUTE PRESSURE SENSOR
The manifold absolute pressure (MAP) sensor is integral to the compuvalve. It is a pressure transducer that converts pressure to voltage through a
piezo-resistive element. It is attached to the intake manifold via a vacuum line with a damper tube that is routed to an external hose barb on the
compuvalve. MAP is used to monitor engine operating state.
