OVERSIZE LOCK UP CONTROL VALVE KIT
# 72792K

Sonnax Oversized Lockup Control Valve Kit

OVERSIZE LOCK UP CONTROL VALVE KIT

Symptoms:

  • TCC apply & release concerns
  • Harsh downshifts
  • RPM fluctuation
  • TCC codes

Cause:
Wear at the lockup control valve results in the converter remaining applied and transferring shift shock. Loss of lube pressure and control timing also results in RPM fluctuation.

Correction:
The Sonnax oversized lockup control plunger valve and sleeve kit corrects lost lube pressure and control timing issues caused by a worn OE plunger valve and sleeve.


Toyota/Lexus A750, A761 and A960 series transmissions can have harsh 2-3 and harsh coast downshift complaints associated with bore wear at the lockup control valve. This is due to the converter clutch remaning applied. When bore wear delays TCC apply, the vehicle RPM may surge or set gear ratio codes due to high slip rates. Installing the Sonnax oversized lockup control valve kit can restore correct lube pressure and valve control timing.

  • Restores correct lube pressure
  • Re-establishes valve control timing

Content:

  • Lockup Control Valve
  • Plunger Valve
  • Plunger Sleeve

SONNAX Installation Instructions

Type of Product: Sundry Parts
Qty Needed:
Years:
Alternative #:
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