Line Pressure Test

Connect a 0-300 psi (0-21.1 kg/cm² ) pressure gauge to line pressure tap on left side of transmission case, forward of control lever. See Figure . Gauge hose must be long enough to read gauge while operating engine.
With engine at normal operating temperature, apply parking and service brakes. Check line pressure at idle and WOT stall speed in all ranges. See Fig 1 -Fig 5 . If pressure is not as specified, perform EPC PRESSURE CHECK .

Fig 1: Line Pressure Chart (Crown Victoria, Grand Marquis & Town Car)

Courtesy of FORD MOTOR CO.

Fig 2: Line Pressure Chart (Econoline)

Courtesy of FORD MOTOR CO.

Fig 3: Line Pressure Chart (Expedition)

Courtesy of FORD MOTOR CO.

Fig 4: Line Pressure Chart (Explorer & Mountaineer)

Courtesy of FORD MOTOR CO.

Fig 5: Line Pressure Chart ("F" Series Pickup)

Courtesy of FORD MOTOR CO.