Manifold Absolute Pressure Sensor
WARNING: This page is about a different car, the 2002 Ford Pickup and 2002 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Faults in Manifold Absolute Pressure (MAP) sensor or circuit should set a Diagnostic Trouble Code (DTC). Perform QUICK TEST in SELF-DIAGNOSTICS - EEC-V - BI-FUEL article. If no DTC has been set, see TEST DB: MAP/BARO SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - BI-FUEL article for MAP sensor and circuit testing.