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Line Pressure Test: Notes

CAUTION: Carry out Line Pressure Test before carrying out Stall Speed Test. If line pressure is low at stall, do not carry out stall test or further transaxle damage can occur. Do not maintain WOT in any gear range for more than five seconds.
CAUTION: The Transmission Tester must be removed from the transaxle and the vehicle harness connected to verify these pressures.

The Line Pressure Test verifies that the line pressure is within specifications.

  1. Connect pressure gauge to line pressure tap.

    LINE PRESSURE TAP 

    Fig 1: Locating Line Pressure Tap
    G01403429Courtesy of FORD MOTOR CO.
  2. Start engine and check line pressures. Refer to LINE PRESSURE CHART  to determine if line pressure is within specifications.
  3. If line pressure is not within specifications, carry out on-board diagnostics and pinpoint test, air pressure check and repair main control system or pump as required.