Sonnax Chrysler 45RFE 545RFE 68RFE Transmission TC Limit Valve Kit Note: Tool is required for installation Symptoms: Delayed engagement Loss of fuel economy Loss of power Low cooler flow Low TCC release pressure Overheated converter Overheating Cause: Severe wear of the TC limit valve bore results in low oil flow into the converter circuit. Correction: Oversize the bore with the Sonnax tool kit and install the TC limit valve sleeve kit to restore proper release oil pressure. Severe wear of the TC limit valve bore results in loss of converter release oil pressure. Reduced release pressure at low speed and idle will drag the converter lining, causing engine surge, pulsation or stall. Low release pressure at cruise affects and limits efficiency, often increasing RPM and reducing fuel economy. If release pressure is low enough, the converter lining may drag enough to glaze the lining. A worn TC limit bore contributes to converter drainback issues. The Sonnax oversized TC limit valve kit 44912-03K restores normal converter charge and cooler flow, correcting converter overheating problems. Wear-resistant sleeve provides support for valve to reduce future valve wear Kit includes spring and retainer plate