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Home >> Ford >> 2002 >> Crown Victoria Base, 4.6 9 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - Diagnosis - 4R70W >> Performance Tests >> Hydraulic Pressure Tests >> Notes

Hydraulic Pressure Tests: Notes

CAUTION: Perform line pressure test before stall speed test. If line pressure is low at stall speed, DO NOT perform stall speed test, or transmission damage will occur.
WARNING: DO NOT maintain Wide Open Throttle (WOT) in any transmission range for more than 5 seconds, or internal transmission damage may occur.
NOTE: Pressure test at idle position must be taken with engine at normal operating temperature. Pressure test at WOT position should be taken at full stall speed conditions. Run engine at 1000 RPM with gearshift lever in "N" position for one minute to cool fluid between tests.