A/T - E4OD 4-1 Downshift During Forced 4-2 Downshift

Article No.
98-9-20

05/11/98

TRANSMISSION - E4OD - DOWNSHIFT DURING A
FORCED 4-2 DOWNSHIFT BETWEEN 88-105 KM/H
(55-65 MPH) - VEHICLES BUILT THROUGH 12/22/97

LIGHT TRUCK:
1997-98 ECONOLINE, EXPEDITION, F-150, F-250 LD
1998 NAVIGATOR

ISSUE
Some vehicles may experience a 4-1 downshift when performing a forced 4-2 downshift (kickdown) between 88-105 km/h (55-65 mph) causing the engine rpm to increase higher than expected. This may be caused by internal leakage of fluid between the hydraulic circuits in the transmission case worm trail between the separator plate gasket and transmission case.





ACTION
Perform normal diagnostics as outlined in the appropriate Workshop Manual. If the concern is still present, replace the separator plate and gaskets. Refer to the Application Chart below and the appropriate Workshop Manual for replacement procedures.

PART NUMBER PART NAME

F8UZ-7A008-CA Separator Plate
F81Z-7A008-EA Separator Plate
F81Z-7C155-AA Gasket
F81Z-7D100-AB Gasket

OTHER APPLICABLE ARTICLES: 98-9-21

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME

98O92OA Replace Separator Plate 2.1 Hrs.
And Gasket

DEALER CODING
CONDITION
BASIC PART NO. CODE
7A008, 7D100 42

OASIS CODES: 502000, 504000, 590000