• Delayed engagement
• High line pressure
• Low cooler flow at idle
• Low line pressure
• Overheating

Wear at the inboard end of the PR valve reduces force, which affects converter feed and engagements, also creating higher line pressure. Wear at the mid-outer end reduces line pressure as it leaks to sump.

The Sonnax kits contain a highly wear resistant aluminum sleeve to fit with the OE anodized aluminum valve, providing additional support and proper line pressure control.

Additional Resources