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EPC Pressure Check

  1. Connect a 0-100 psi (0-7.0 kg/cm2 ) pressure gauge to EPC pressure tap at right side of transmission case. See Fig 1 . Gauge hose must be long enough to read gauge while operating engine.
  2. With engine at normal operating temperature, apply parking and service brakes. Check EPC pressure at idle and WOT stall speed in all ranges. See Fig 2 -Fig 7 . If pressure is not as specified, diagnose EPC operation. See TEST D: ELECTRONIC PRESSURE CONTROL SOLENOID  under DIAGNOSTIC TESTS. If EPC operation is okay, see LINE PRESSURE TEST RESULTS  .
Fig 1: Identifying Hydraulic Pressure Taps
G96D04373Courtesy of FORD MOTOR CO.
Fig 2: EPC & Clutch Pressure Chart (Crown Victoria, Grand Marquis & Town Car)
G00095088Courtesy of FORD MOTOR CO.
Fig 3: EPC & Clutch Pressure Chart (Econoline - 4.2L & 4.6L)
G00095090Courtesy of FORD MOTOR CO.
Fig 4: EPC & Clutch Pressure Chart (Econoline - 5.4L)
G00095091Courtesy of FORD MOTOR CO.
Fig 5: EPC & Clutch Pressure Chart (Expedition)
G00095093Courtesy of FORD MOTOR CO.
Fig 6: EPC & Clutch Pressure Chart (Explorer & Mountaineer)
G00095095Courtesy of FORD MOTOR CO.
Fig 7: EPC & Clutch Pressure Chart ("F" Series Pickup)
G00095097Courtesy of FORD MOTOR CO.
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