Symptoms:

  • Delayed engagement
  • Harsh downshifts
  • Harsh upshifts
  • Neutral shifts
  • High line pressure
  • Wrong gear starts
  • Gear ratio & solenoid codes
  • TCC slip
  • Flare shifts

Cause:

All solenoids are fed by the solenoid pressure regulator valve. Worn valve/bore surfaces allow critical pressurized oil to cross-leak to the sump, reducing available oil pressure and volume for the solenoids. Shift quality will be adversely affected by wear and operating temperatures.

Correction:

Restore normal operation on moderately worn bores by installing the Sonnax drop-in solenoid pressure regulator valve kit.

948TE, Honda, Acura 9-Speed, ZF9HP48

Solenoid Pressure Regulator Valve Kit
Part No. 85740-09K

You need this if... View Instructions Find a Distributor

Chrysler 948TE, Honda/Acura, 9-speed and ZF9HP48 units incorporate variable force solenoids to control clutch apply/release, torque converter clutch apply/release and line pressure. The solenoid pressure regulator valve insures proper flow volume and pressure to the solenoids during hot conditions and low pressure operation. Low feed pressure at idle can create delayed engagement or wrong gear starts. This valve also limits the maximum pressure to all the solenoids. Excessive solenoid feed pressure can flood the solenoids causing gear ratio codes, harsh up/downshifts and excessive line pressure. Sonnax drop-in solenoid pressure regulator valve kit 85740-09K restores proper solenoid pressure regulation.

  • Hardcoat anodized aluminum valve combats premature wear
  • Highly wear resistant billet sleeve seals bore from wear-related fluid loss and provides new, unworn bore for the valve to operate
  • New spring provided for correct limit pressure
  • Drill and plug included to allow for quick rerouting of balance oil at the separator plate
  • Drop-in Zip Valve™ parts install quickly and easily
Learn More About Zip Valve™ Drop-In Repairs
  • Valve
  • Sleeve
  • Sleeve Extension
  • Spring
  • Drill Bit Not shown
  • Plug Not Shown
  • 948TE, Honda, Acura 9-Speed, ZF9HP48 Solenoid Pressure Regulator Valve Kit 85740-09K
  • 948TE, Honda, Acura 9-Speed, ZF9HP48 Solenoid Pressure Regulator Valve Kit 85740-09K

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.

948TE, Honda, Acura 9-Speed, ZF9HP48 Solenoid Pressure Regulator Valve Kit Vacuum Test Locations