4R44E 5R55E Vac Interactive
2017-05-04
: Sonnax 4R44E-5R55E-Vac Interactive 4R44E-5R55E-Vac_Interactive 430 file tech_resource uploads
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©2017 Sonnax Industries, Inc. 4R44E-5R55E-Vac-Locations 05-04-17
800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com Page 1
FORD 4R44E-5R55E
TIME TESTED • INDUSTRY TRUSTED
Zip Kit® 4R44E-5R55E-ZIP Available for this unit.
Critical Wear Areas & Vacuum Test Locations
NOTE: OE valves are shown in rest position and should be tested in rest position unless otherwise indicated. Test locations are pointed
to with an arrow. Springs are not shown for visual clarity. Low vacuum reading indicates wear and Sonnax parts noted for replacement.
For specic vacuum test information, refer to individual part instructions included in kits and available at www.sonnax.com.
20
25
15
0
10
5
30
VACUUM
TEST
Pressure Regulator Valve
• Delayed engagement due to poor converter ll
• High/Low line pressure
• Low cooler ow at idle
• Overheated converters
Replace with Sonnax Part No.
37947-05K Requires 37947-TL5
TCC Modulator Valve
• No TCC apply
• Code 1741
• Low cooler ow
• Poor converter ll & delayed engagements
• Engine stall on Forward engagement
Replace with Sonnax Part No.
37947-07K Requires 37947-TL5
Boost Valve Assembly
• Soft shifts
• Delayed Reverse
• Low line pressure
• Poor modulator control
Replace with Sonnax Part No.
37947-01K OE Ratio
37947-03K Increased Ratio
EPC Boost Valve,
Forward Modulator Valve
& Reverse Modulator Valve
• Poor shift quality
• Delayed Forward/no Reverse
• 2nd Gear starts
Replace with Sonnax Part No.
37947-11K Requires 37947-TL11
To vacuum test this port: invert
valve and prop outboard with a
Torlon checkball.
Click on Sonnax part numbers to see more information.
©2017 Sonnax Industries, Inc. 4R44E-5R55E-Vac-Locations 05-04-17
800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com Page 2
FORD 4R44E-5R55E
TIME TESTED • INDUSTRY TRUSTED
Zip Kit® 4R44E-5R55E-ZIP Available for this unit.
Valve Body Descriptions
I.D. No. Description
101 Forward Engagement
Control Valve
102 Boost Valve Assembly
& Pressure Regulator Valve
103 EPC Boost Valve
& Forward Modulator Valve
104 Manual Valve
105 Reverse Modulation Valves
106 2-3 or 3-4 Shift Valve
107 1-2 or 2-3 Shift Valve
108 Solenoid Regulator Valve
109 Coast Clutch Valve
& Converter Regulator Valve
110 Converter Clutch
Modulator Valve
111 Cooler Limit Valve, Bypass Valve
& Thermostat Bypass Valve
112 3-4 or 1-2 & 4-5 Shift Valve
113 Throttle Downshift Control Valve
114 Manual Low Valve
115 Kick Downshift Control Valve
OE Valve Body Exploded View
101
102
106
105
104
103
107
108
109
110
111
115
114
113
112
