Product Description
U341E U341F Oversized Lockup Control Valve Kit
NOT ALL U341E AND U341F UNITS HAVE A LOCKUP CLUTCH CONTROL VAVLE TRAIN. VERIFY THIS VALVE TRAIN IS PRESENT PRIOR TO ORDERING THIS KIT. UNITS THAT DO NOT CONTAIN THIS VALVE TRAIN WILL HAVE AN EMPTY BORE
Sonnax Part Number: 37740-08K
TOOLING REQUIRED
- F-37740-TL8
- VB-FIX
Toyota/Lexus vehicles equipped with U341E and U341F units may have TCC apply and release concerns such as no lockup, slipping lockup or TCC stuck on. Improper lockup can result in harsh downshifts or engine stall at idle as well as associated trouble codes. On vehicles equipped with a lockup control valve train, bore wear allows control pressure to escape the circuit. Reconditioning the bore and installing Sonnax oversized lockup control valve kit 37740-08K renews TCC operation by restoring critical clearances and preventing pressure loss.
- Hardcoat anodized aluminum valves combat premature wear
- Annular grooves help center valve in bore to reduce future side-load wear
PACKAGE CONTAINS
- Lockup Control Valve
- Plunger Valve
- Plunger Sleeve
- Retainer
SYMPTOMS
- Converter shudder & TCC slip
- Engine stall at idle
- Harsh downshifts
- No lockup
- Overheated fluid
- Poor fuel economy
- RPM surge on coast
- TCC apply & release concerns
- TCC codes
CAUSE
CORRECTION
