Tool Required VB-FIX Required

Printpartsummary
Symptoms:
  • Burnt converter
  • Harsh downshifts
  • TCC apply & release concerns
  • TCC codes
Cause:

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

Correction:

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

Tool Required VB-FIX Required

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

Oversized Lockup Control Valve Kit

Part No.

27741-25K

Oversized Lockup Control Valve Kit
  • 27741-25k_u151e_combo

  • 27741-25k_u140e_combo

  • Oversized Lockup Control Valve Kit

Small_27741-25k_u151e_combo Small_27741-25k_u140e_combo Small_22741-25k

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

Oversized Lockup Control Valve Kit

Part No. 27741-25K

  • Lockup Control Valve
  • Plunger Valve
  • Plunger Sleeve

Complaint:

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

Cause:

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


Correction:

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

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

Required Tools

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.

  • Test Locations
  • Test Locations
  • Test Locations

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Contact a Sonnax Distributor to purchase this part.