Wear at the TCC apply valve bore in the valve body allows converter clutch apply oil to exhaust.
This oversized valve and TCC boost assembly prevents apply pressure leakage and restores proper converter clutch control.
Continuous stroking of the TCC apply valve can create excessive valve body wear, and allow converter apply pressure to leak to exhaust. This prevents proper engagement of the torque converter clutch, and can result in loss of TCC apply, engine stall, overheating conditions, or a 1582 code. Sonnax has developed an oversized TCC apply valve that allows the valve body to be refurbished, restoring the hydraulic integrity of the circuit.
Contact a Sonnax Parts Distributor.