Symptoms:

  • Harsh shifts
  • Flare shifts
  • No 4th
  • No 5th
  • No 6th
  • Low clutch oil pressure

Cause:

Excessive solenoid pressure regulator valve bore wear.

Correction:

Sonnax oversized solenoid pressure regulator valve restores hydraulic control.

6F35 (Gen. 1), 6F35 (Gen. 2)

Oversized Solenoid Pressure Regulator Valve
Part No. 144740A-01


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

The function of the solenoid pressure regulator is to provide regulated pressure to shift solenoids. Wear in the solenoid pressure regulator bore causes low clutch pressure and results in transmission slips/harsh shifts. This eventually leads to a loss of 4th through 6th Gears and finally the loss of transmission function. Reconditioning the bore and installing Sonnax oversized solenoid pressure regulator valve 144740A-01 will restore hydraulic control and prevent wear in Ford 6F35 Gen. 1 and Gen. 2 units.

  • Hardcoat anodized aluminum valve combats premature wear
  • Annular grooves help center valve in bore to reduce future side-load wear

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.

Ford Gen. 1 & 2 6F35 Valve Body Layout

Ford Gen. 1 & 2 6F35 Valve Body Layout
  • 6F35 (Gen. 1), 6F35 (Gen. 2) Oversized Solenoid Pressure Regulator Valve 144740A-01
  • 6F35 (Gen. 1), 6F35 (Gen. 2) Oversized Solenoid Pressure Regulator Valve 144740A-01

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.

6F35 (Gen. 1), 6F35 (Gen. 2) Oversized Solenoid Pressure Regulator Valve Vacuum Test Locations