Listed Ford transmissions often exhibit driveability concerns that can be caused by bore wear at the solenoid regulator valve. Wear here allows pressure escape that may result in problems such as loss of 2nd gear, erratic shifting, neutral after 4th, or 2-3 neutral. If the bore deteriorates further, the valve will stick, resulting in wrong gear starts or loss of Forward, especially under hard acceleration. Reconditioning the bore and installing Sonnax oversized solenoid regulator valve kit 76948-47K restores smooth driveability and shift control in all ranges.
- Lengthened critical spool for added stability and wear prevention
- Hardcoat anodized aluminum valve combats premature wear