Transmission Parts Chrysler Honda/Acura ZF ZF9HP48 948TE Honda, Acura 9-Speed Valve Body Valve / Sleeve

Symptoms:

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

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:

Sonnax oversized solenoid pressure regulator valve kit eliminates cross-leaks and loss of critical oil to the sump, restoring correct oil pressure and volume available to the solenoids.

948TE, Honda, Acura 9-Speed, ZF9HP48

Oversized Solenoid Pressure Regulator Valve Kit
Part No. 85740-11K

Tooling:

F-68942-TL14
VB-FIX

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Chrysler 948TE, Honda/Acura, 9-speed and ZF9HP48 transmissions 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. Reconditioning the bore and installing Sonnax oversized solenoid pressure regulator valve kit 85740-11K restores proper solenoid pressure regulation.

Hardcoat anodized aluminum valve combats premature wear
Maximized valve support to prevent side-load wear and cross-leaks
Matching spring reproduces OE function with the oversized valve

Contents

Valve
Spring
End Plug

Valve Body Layout

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.