July 21, 2021
A unique valve in Chrysler 948TE, Honda/Acura, 9-speed and ZF9HP48 transmissions is the shift valve system pressure valve (SV-SP), which is designed to help control main line pressure by feeding pressure to the inboard side of the main pressure regulator valve. Wear at this SV-SP valve can prevent proper line regulation, which results in incorrect line pressure control, poor shift quality and burnt clutches. Sonnax shift valve system pressure valve kit 85740-07K restores the hydraulic control necessary to provide proper line pressure regulation.
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.