August 15, 2022
Troubleshooting Ford 6R80 & 6R140 Timing-Related Shift Issues
Jim Dial
Ford 6R140 Vacuum Test Guide
Vacuum testing is an efficient way to identify the root cause of transmission problems and evaluate the effectiveness of repairs. Frequent, proper vacuum testing can put money in the bank, improve turnaround time in your bays, and prevent costly comebacks.
See how easy it is to master vacuum testing and work with confidence knowing your rebuild is done right the first time.
Click here to view PDF if the tech resource does not appear below.
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Related Units
Related Parts
Required
Recommended
6R140
Oversized TCC Charge Limit Valve Kit 126740-01K
-
Helps cure:
- Engine stall
- TCC codes
- No TCC release
- Overheated fluid
- Low TCC release pressure
- High TCC release pressure
- Low converter & lube flow
- TCC lining failure
Required
Recommended
6R140
Oversized TCC Apply Regulator & Boost Valve Kit 126740-15K
-
Helps cure:
- TCC codes
- TCC slip
- No lockup
- TCC cycling
- Overheated fluid
- Low cooler & lube pressure
- Loss of fuel economy
Required
Recommended
6R140
Oversized Forward Clutch Latch Valve Kit 126740-06K
-
Helps cure:
- Shift quality is not load sensitive
- Delayed engagement
- Gear ratio & solenoid codes
- Harsh shifts
- Burnt Forward clutch
- Overheated fluid
Required
Recommended
6R140
Oversized Line Pressure Control Valve Kit 126740-08K
-
Helps cure:
- Poor shift quality
- TCC apply & release concerns
- Erratic line pressure
- Burnt clutches
- Low converter & lube flow
- Overheating
Required
Recommended
6R140
Oversized Direct Clutch Regulator Valve Kit 126740-11K
-
Helps cure:
- Delayed Reverse
- 2-3 Flare
- 4-5 Flare
- Ratio codes
- 3rd Slip
- 5th Slip
- Direct clutch burned
- Bind-up
- Reverse slip
Required
Recommended
6R140
Oversized Low/Reverse Regulator Valve Kit 126740-27K
-
Helps cure:
- Low line pressure
- Burnt Low/Reverse clutch
- Delayed Reverse
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