February 21, 2013
Common complaints associated with Ford 5R55N, 5R55W and 5R55S transmissions are converter slip and code P0741. These complaints often occur at relatively low mileage. Wear at the TCC modulator valve bore reduces apply pressure to the converter clutch and line pressure. Excessive leakage anywhere on this valve body increases the foaming of the oil. This foaming increases the venting action from the breather. The Sonnax TCC modulator valve kit 56947J-15K includes a hardcoat anodized valve that is supported through its entire stroke. The kit also includes two springs calibrated for either 5R55N or 5R55W and 5R55S valve bodies.
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.