Symptoms:

  • Loss of higher gears
  • Damaged A dog clutch
  • Damaged F dog clutch
  • Input shaft damage
  • P3 & P4 sun gear damage
  • Delayed engagement
  • Cycling RPM during shift

Cause:

The dog clutch plunger valves provide source pressure for both the A and F dog clutch apply and release. Responding to TCM and the linear solenoid, the clutch control valve establishes control timing of apply and release relative to engine RPM. Bore wear will cause an overlap or premature exhaust of clutch pressure.

Correction:

Sonnax drop-in A & F dog clutch plunger valve kit corrects circuit pressure loss and restores control timing of the A and F dog clutch valves.
  • 948TE, Honda, Acura 9-Speed, ZF9HP48 A & F Dog Clutch Plunger Valve Kit 85740-05K
  • 948TE, Honda, Acura 9-Speed, ZF9HP48 A & F Dog Clutch Plunger Valve Kit 85740-05K

You need this if...

Visible wear or scratches are found on the I.D. the sleeve or O.D. of the plunger.