January 25, 2023
Uncovering the Root Cause of Pressure & Complaints – The Critical Role of Solenoid Modulator & AFL Valves
Constant oscillation of the solenoid regulator valve in the bore creates wear, which can reduce solenoid feed pressure, resulting in various shift complaints in VW/Audi 096, 097, 098, 01M, 01N, 01P units. In addition, wear at the solenoid regulator valve can reduce balance line pressure at the main regulator valve, which will result in low line pressure or no line rise. Sonnax oversized solenoid regulator valve 119940-06K restores solenoid feed oil pressure. Adjustment of the ratcheting end plug on the boost regulator valve may be needed after servicing the solenoid regulator valve.
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.