September 30, 2005
Ford 6R140 transmissions often display TCC-related concerns due to deterioration of the TCC apply boost valve and/or sleeve. As wear progresses, pressure loss causes various symptoms to arise such as TCC slip, no lockup, insufficient cooler or lube pressure, overheated fluid, suffering fuel economy and/or TCC codes. Restore normal TCC operation and revive cooler/lube flow by installing Sonnax TCC apply boost valve kit 126740-03K.
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.
Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.