Constant oscillation of the solenoid regulator valve creates bore wear. This wear can result in oil pressure loss and reduce solenoid feed pressure and balance line pressure at the main regulator valve.
Sonnax offers an oversized valve kit for the solenoid regulator valve. This kit allows the valve bore to be refurbished to restore solenoid feed oil pressure.
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 offers an oversized solenoid regulator valve 119940-06K to restore 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 recommends the adjustment tool 119940-TL9 for proper adjustment without damage to the plug.