There are two valve body gaskets between the valve body, seperator plate and trans case. Newer plates come with the gaskets bonded to them. The gasket blows out in the right rear corner at the case to plate section of the low/reverse servo piston which does not use a spring.It also blows out at the shift & epc/tcc solenoids on the drivers side of the valve body. There is an update per a technical service bulletin for this concern.Any of the concerns listed applies to this repair:
TRANSMISSION - 4R44E - 4R55E - 5R44E - 5R55E -LOW LINE PRESSURE READING AT WIDE OPEN THROTTLE (WOT) - POSSIBLE DIAGNOSTIC TROUBLE CODES P0732, P0733, P1762 - VEHICLES BUILT BEFORE 12/1/2001
FORD:1995-2001 EXPLORER1995-2002 RANGER1996-1997 AEROSTAR2000-2002 EXPLORER SPORT2001-2002 EXPLORER SPORT TRAC
This article supersedes TSB's 03-11-9, 02-13-8 and 02-08-2 to update the model coverage.
Some vehicles built prior to 12/1/2001 may exhibit the following shift and engagement conditions:
Out of specification pressures controlled by the transmission main control valve body separator plate may be the cause.
Verify the condition, the main control valve body separator plate may need to be updated to the latest level. Refer to the following Service Procedure for details.SERVICE PROCEDURE
CAUTION A NEW SEPARATOR 7Z490 MUST BE USED WHEN INSTALLING THE SPECIAL SERVICE KIT 7M203 OR ADDITIONAL TRANSMISSION DAMAGE MAY OCCUR. REFER TO THE PARTS APPLICATION CHART IN THIS ARTICLE FOR CORRECT SEPARATOR PLATE PART LISTING.
NOTE THIS ARTICLE DOES NOT APPLY TO ANY OTHER CONDITIONS OR COMPONENTS THAT MAY CAUSE SIMILAR SYMPTOMS AND IS ONLY WRITTEN TO COVER THESE SPECIFIC CONDITIONS.
NOTE AN IN-LINE SERVICE FILTER IS NOT REQUIRED TO BE ADDED OR REPLACED FOR THIS TSB.
Clear all DTCs.