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December 1, 1998 Service bulletin

Some vehicles with 4R100 transmission may exhibit a flashing tcil with diagnostic trouble code (DTC) 1728...

Ford technical service bulletin 5141 for 1999 Ford F-150, 1999 Ford Expedition and 1999 Ford F-250 and others.

Bulletin number
5141
Component
Power train: automatic transmission
Summary
Some vehicles with 4r100 transmission may exhibit a flashing tcil with diagnostic trouble code (dtc) 1728 in memory.dtc 1728 is defined as internal transmission element slippage. This splippage can occur anywhere in the transmission including the torque converter. Tt

Owners of these vehicles have filed 230 complaints in the transmission category.

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