FORD & MAZDA
4R44E 4R55E
5R44E 5R55E
'95+ 4 & 5-SPEED AUTOMATIC TRANSMISSIONS:
VALVE BODY REPAIR & REBUILD ZIP KIT
FITS:
- '97 3.0L & 4.0L AEROSTAR (4R44E, 5R55E)
- '97-'08 4.0L EXPLORER & SPORT TRAC (5R55E WITH 18 BOLT PAN)
- '97-'12 2.3L, 3.0L, & 4.0L RANGER (4R44E, 5R44E, 5R55E WITH 18 BOLT PAN)
- '97-'10 2.3L, 3.0L, & 4.0L MAZDA B SERIES PICKUPS (4R44E, 5R44E, 5R55E WITH 18 BOLT PAN)
- '98-'00 4.0L MERCURY MOUNTAINEER
- '96 3.0L & 4.0L AEROSTAR (4R55E, 4R44E)
- '95-'96 4.0L EXPLORER (4R55E)
- '95-'96 2.3L, 2.5L, 3.0L, & 4.0L RANGER (4R44E, 4R55E)
- '95-'96 2.3L, 2.5L, & 3.0L MAZDA B SERIES PICKUPS (4R44E, 4R55E)
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SONNAX VALVE BODY ZIP KIT INCLUDES:
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BOOST VALVE & SLEEVE KIT
ELEVATED MAIN PR SPRING
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FORWARD MODULATOR VALVE & PTFE SEAL
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FORWARD MODULATOR O-RINGED END PLUG WITH SPRING
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REVERSE MODULATOR O-RINGED END PLUG
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2-3 / 3-4 SHIFT VALVE O-RINGED END PLUG
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1-2/ 2-3 SHIFT VALVE O-RINGED END PLUG
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CONVERTER REGULATOR VALVE O-RINGED END PLUG & SPRING
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O-RINGED END PLUGS FOR KICK DOWNSHAFT, MANUAL LOW & THROTTLE DOWNSHIFT VALVES
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EXTRA O-RINGS FOR END PLUGS
- CHECKBALLS & EPC COMPONENTS
- MODIFICATION PARTS FOR TCC APPLY & OD SERVO APPLY PRESSURES
- SHIFT SOLENOID O-RINGS: FOUR SMALL & FOUR LARGE
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This SONNAX kit elevates line pressure to overcome some of the internal oil loss, has a quicker EPC rise for firmer shifts, addresses leaks in the solenoid circuit, improves intermediate servo and direct clutch pressure, and improves TCC apply.
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CAUSE OF THE PROBLEM: Leakage of EPC oil at multiple locations diminishes line rise and feed to the TCC circuit, resulting in pressure-related shift complaints, converter issues and trouble codes. Additional leakage in the solenoid oil circuit contributes to the various shift complaints.
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This kit is a combination of service items used to improve valve control and reduce oil loss in either the 4R44E/55E or 5R44E/55E.
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None of the items included in this kit requires reaming, although some of the repairs point to and suggest sleeves be installed when worn beyond the scope of this kit.
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Note: Prior to installing this kit, it is highly recommended to inspect the valve body for wear beyond the scope of this kit. In the event of excessive wear in critical locations, this kit should be used in conjunction with the appropriate Sonnax valve kit.
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