Ford 4r44e-5r55e
Zip Kit4r44e-5r55e-ZIP Available for this unit.
TIME TESTED INDUSTRY TRUSTED
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 specific vacuum test information, refer to individual part instructions included in kits and available at www.sonnax.com.
20 25
15
10
0 30 VACUUM TEST
Click on Sonnax part numbers to see more information. 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
Pressure regulator Valve
Delayed engagement due to poor converter fill High/Low line pressure Low cooler flow at idle Overheated converters Replace with Sonnax Part No. 37947-05K
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
TCC regulator Valve
Converter apply issues High TCC slip RPm Codes 628 and 1741 TCC surge/cycle High fluid/converter temperatures Replace with Sonnax Part No. 37947-09K 37947-38
Coast Clutch Valve
No 4th gear (4R) No 2nd or 5th gear (5R) No engine braking in D3 to low No coast clutch apply Replace with Sonnax Part No. 37947-33K
TCC Modulator Valve
No TCC apply Code 1741 Low cooler flow Poor converter fill & delayed engagements Engine stall on forward engagement Replace with Sonnax Part No. 37947-07K
To vacuum test this port: invertet valve and prop outboard with a Torlon checkball.
2012 Sonnax Industries, Inc. 800-843-2600 802-463-9722 F: 802-463-4059 www.sonnax.com
4R44E-5R55E-Vac-Locations
12-31-12 Page 1
Ford 4r44e-5r55e
TIME TESTED INDUSTRY TRUSTED
oe Valve Body exploded View
Valve Body descriptions
I.D. No.
101 102 103 104 105 106 107 108 109 110 111 112 113 114 115
Description
Forward Engagement Control Valve Boost Valve Assembly & Pressure Regulator Valve EPC Boost Valve & Forward modulator Valve manual Valve Reverse modulation Valves 2-3 or 3-4 Shift Valve 1-2 or 2-3 Shift Valve Solenoid Regulator Valve Coast Clutch Valve & Converter Regulator Valve Converter Clutch modulator Valve Cooler Limit Valve, Bypass Valve & Thermostat Bypass Valve 3-4 or 1-2 & 4-5 Shift Valve Throttle Downshift Control Valve manual Low Valve Kick Downshift Control Valve 101 104 102
103
115 114 113 106 107 108 112
105
110 111
109
2012 Sonnax Industries, Inc. 800-843-2600 802-463-9722 F: 802-463-4059 www.sonnax.com
4R44E-5R55E-Vac-Locations
12-31-12 Page 2
