Symptoms:

  • Delayed Reverse
  • Flare shifts
  • Harsh shifts
  • Delayed Forward

Cause:

The solenoid modulator valve bore can wear causing a loss of hydraulic control leading to shift issues.

Correction:

Recover hydraulic control and renew shift performance by reconditioning the bore and installing Sonnax oversized solenoid modulator valve.

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.

6R140 Oversized Solenoid Feed Pressure Regulator Valve Kit Vacuum Test Locations