January 25, 2023
Uncovering the Root Cause of Pressure & Complaints – The Critical Role of Solenoid Modulator & AFL Valves
Maura Stafford
Symptoms:
- 2nd Gear starts
- 3rd Gear starts
- TCC cycling
- TCC slip
- Reduced lube oil from the center support
Cause:
All solenoid regulator valve (SRV) solenoid feed oil and intermediate lube oil passes through the solenoid regulator valve. When the bore wears, critical solenoid feed oil and intermediate lube fluid leaks to exhaust causing shift related problems and loss of lube.Correction:
Sonnax oversized solenoid regulator valve restores SRV pressure.E4OD
Oversized Solenoid Regulator Valve
Part No. 36948-22
Fits '95-earlier, 3-spool valve
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Tooling:
- F-36948-TL22
- VB-FIX
You need this if... View Instructions Find a Distributor
Sonnax oversized solenoid regulator valves 36947-14 and 36948-22 and their tool kits salvage worn valve bodies and restore proper solenoid regulator valve (SRV) circuit function in both early- and late-style Ford E4OD and 4R100 units. Bore wear at the SRV reduces oil supplied to the shift, TCC and coast clutch solenoids. This regulated pressure also feeds the intermediate or center support area. The '96-later valve bodies incorporated a two-spool anodized aluminum valve that is prone to flaking of the anodize layer, causing premature wear of valve and bore. The '95-earlier have a three-spool steel valve that wears the bore, resulting in excess clearance when hot.
- Hardcoat anodized aluminum valve combats premature wear
- Annular grooves center the valve hydraulically to prevent wear
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.
Ford E4OD, 4R100 Valve Body Layout
