TCC codes, shuttle or loss of lockup can indicate a bypass control problem in listed Ford applications. A worn bypass clutch control bore or valve will lower converter and TCC apply pressure. Sonnax oversized bypass clutch control valve and tool kit 76948-31 salvages affected valve bodies, allowing you to ream the bore to accept the oversized valve, restoring proper function to the bypass control circuit.

Salvages valve bodies with wear of the bypass clutch control bore or valve
Corrects TCC codes, shuttle/loss of lockup, converter overheat and reduced/lost cooler flow
Provides increased valve support for longer service life

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