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1997 Ford F-250 Lariat 5.4L E40d Trans
After you reach cruising speed and lockup convertor is engaged, if you slowly increase throttle pressure the trans will down shift and the od light will come on causing the trans to go into limpin mode . Code 1278 is stored in memory indicating a slip wa...
FIX posted 11/19/1999
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Message Closed w/FIX
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Related Documents & Media 
| VIN | 1FTFF28L9V |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Affected | E40d Trans |
| Conditions | Od Light Flashing and Hard Upshifts |
Message Closed w/FIX
Vehicle Data
1997 Ford F-250 Lariat
| VIN | 1FTFF28L9V |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Affected | E40d Trans |
| Conditions | Od Light Flashing and Hard Upshifts |
Video