Recommended Procedure:

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2005 Ford RV Cutaway, 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.

Inspect for a hole in the MAP sensor hose or a pinched hose.
Inspect the fuel system, including the fuel tank, fuel pump, fuel filter housing and fuel lines, for kinks, bends or leakage.
Inspect for coolant leaks at the radiator and coolant hoses. Check the coolant level.
Inspect wiring for correct routing, and verify no rubbing or chafing has occurred.
Inspect all sensors, and verify the connectors are properly secured.
Inspect the intercooler hoses for leaks.