Fuel Pressure
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1991 Ford Ranger, 1991 Ford RV Cutaway, 1991 Ford Pickup, 1991 Ford F-Super Duty, and 1991 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Inspect fuel system for leaks or damage before testing fuel pump.
NOTE:
For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS
article.
Release fuel pressure. Install fuel pressure gauge. Fuel pump may be activated by grounding fuel pump lead at Self-Test connector. Using a jumper lead, ground "FP" terminal with ignition on. This activates fuel pump. See Fig 1. For additional circuit test information, see appropriate TESTS W/CODES article in the ENGINE PERFORMANCE Section.