August 15, 2022
Troubleshooting Ford 6R80 & 6R140 Timing-Related Shift Issues
Jim Dial
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.Warning:
Tool kit F-126740-TL6 is also used for 126740-06K. The reamer in tool kit F-126740-TL6 requires the use of a reamer stop for this application. Sonnax includes the reamer stop in newer tool kits for this application. However, if you own an older tool kit Sonnax recommends using McMaster-Carr 98381A619 or another of the same dimensions.
6R140
Oversized Solenoid Feed Pressure Regulator Valve Kit
Part No. 126740-24K
-
Tooling:
- F-126740-TL6
You need this if... View Instructions Find a Distributor
Ford 6R140 transmissions may exhibit multiple shift problems due to excess wear in the solenoid modulator circuit. Flare and harsh shifts as well as a delayed Forward and Reverse are common results of the wear. Reconditioning the bore and installing Sonnax oversized solenoid feed pressure regulator valve kit 126740-24K restores hydraulic integrity for a properly modulated solenoid pressure.
- Hardcoat anodized aluminum valve combats premature wear
- Added annular grooves for better centering in the bore
- Reuses the OE spring
- Valve
- End Plug
- O-Ring (2) 1 Extra
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 6R140 Valve Body Layout
September 16, 2022
Troubleshooting Ford 6R80 & 6R140 2-3 Shift Quality Issues
Jim Dial
January 25, 2023
Uncovering the Root Cause of Pressure & Complaints – The Critical Role of Solenoid Modulator & AFL Valves
Maura Stafford
