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Symptoms:

  • Burnt converter
  • Harsh downshifts
  • TCC apply & release concerns
  • TCC codes

Cause:

Bore wear at the lockup control valve allows pressure loss that causes drivability concerns.

Correction:

Eliminate bore wear and restore normal operation by reconditioning the bore and installing Sonnax oversized lockup control valve kit.

U140E, U140F, U151E, U151F, U240E, U241E, U250E

Oversized Lockup Control Valve Kit
Part No. 27741-25K


You need this if... View Instructions

Toyota/Lexus vehicles equipped with U140E/F, U151E/F, U240E, U241E and U250E 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. Bore wear in the lockup control valve allows control pressure to escape the circuit causing these issues. Reconditioning the bore and installing Sonnax oversized lockup control valve kit 27741-25K 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
  • Lockup Control Valve
  • Plunger Valve
  • Plunger Sleeve

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

Toyota U140E/F, U240E, U241E Valve Body Layout

U140ef vbl thumb
  • 27741 25k u140e combo
  • 27741 25k u151e combo
  • 22741 25k

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

  • 27741 25k u151e test
  • 27741 25k u140e test
  • 27741 25k fig1