Product Description
E4OD 4R100 Line Pressure Modulator Plunger Valve Kit (0.331'')
Sonnax Part Number: 36948-03K
Some Ford E4OD and 4R100 transmissions have soft 1-2 or 2-3 shifts, intermittent harsh shifts or poor line rise complaints. These can be caused by ECU (electronic control unit) or accumulator pressure problems. Severe wear of the line pressure modulator sleeve allows EPC (electronic pressure control) oil to leak past the valve and cause soft shifts. Severe wear can also cause the valve to stick or hang up, causing harsh shifts. Sonnax line pressure modulator plunger valve kit 36948-03K eliminates this oil loss problem in listed units.
- Sleeve is manufactured from carbon steel to prevent excessive wear
- Valve is made from hardened alloy steel for better wear resistance
- O-Ring helps prevent EPC oil loss.
- Annular grooves center valve in sleeve and eliminate sideloading
- Improves shift firmness
| OE Application | OE Valve Diameter | Sonnax Part No. |
|---|---|---|
| 6-Cylinder & Small 8-Cylinder Applications (THIS LISTING) | .331" | 36948-03K |
| Large 8-Cylinder Applications | .372" | 36948-05K |
| Heavy Duty/High Performance or Stock AX4N ('97-Earlier) Replacement | .427" | 96948-01K |
| Extreme Heavy Duty/High Performance | .500" | 96948-05K |
PACKAGE CONTAINS
- Plunger Valve
- Sleeve
- O-Ring
SYMPTOMS
- Intermittent harsh shifts
- 1-2 Soft
- 2-3 Soft
- Low line rise
- Low EPC pressure
CAUSE
CORRECTION
Sonnax offers four variations of this line pressure modulator plunger valve kit that prevent excessive EPC oil loss.
