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Line Pressure Test: Notes

Fig 1: Identifying Line Pressure Test
G03412230Courtesy of FORD MOTOR CO.
CAUTION: Carry out the line pressure test prior to the Stall Speed Test. If the line pressure is low at stall, do not carry out the Stall Speed Test or further transaxle damage will occur. Do not maintain wide open throttle in any transaxle range for more than five seconds.

This test verifies that the line pressure is within specification.

  1. Connect a pressure gauge to the line pressure tap(s).
  2. Start the engine and check the line pressures; refer to the LINE PRESSURE CHART  to determine if the line pressure is within specification.
    LINE PRESSURE CHART

    Engine RPM Line Pressure
    DRIVE, 2, and 1 Reverse
    Idle 500 kPa (73 psi) 775 kPa (112 psi)
    Stall 1,236 kPa (179 psi) 1,922 kPa (279 psi)