Product Description
TOOLING REQUIRED
- F-157740-TL16
- VB-FIX
Toyota/Lexus vehicles equipped with listed transmissions often display various TCC malfunctions and problems related to reduced cooler flow. These issues can be caused by excess wear in the lockup control valve bore, which allows crucial pressure to escape the circuit. Reconditioning the bore and installing Sonnax oversized lockup control valve kit 157740-16K eliminates wear and restores normal TCC and cooler function for trouble-free operation.
- Annular grooves help center valves in bore and sleeve to reduce future side-load wear
- Hardcoat anodized aluminum valves combat premature wear
- Sleeve manufactured from highly wear-resistant aluminum
CONTENTS
- Lockup Control Valve
- Plunger Valve
- Spring
- Sleeve
SYMPTOMS
- TCC apply & release concerns
- Harsh downshifts
- RPM fluctuation
- TCC codes
- Poor converter & cooler oil flow
CAUSE
Lockup control valve bore wear allows critical cooler and/or converter pressure loss.
CORRECTION
Recover hydraulic control and restore cooler and TCC performance by reconditioning the bore and installing Sonnax oversized lockup control valve kit.
