Vehicles equipped with VW/Audi 0B5 and DL501 transmissions may exhibit drivability concerns such as delayed engagement, harsh or soft shifting and erratic line pressure, often resulting in burnt clutches. These problems can be caused by pressure regulator bore wear, which allows crucial fluid loss from the circuit. Reconditioning the bore and installing Sonnax oversized pressure regulator valve kit 225740-02K eliminates wear and restores critical tolerances for revived line pressure control and improved shifting in all ranges.
Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.