Originally posted by RoadRunner:
The button on the shifter is used to diable the Torque Converter Clutch, NOT 4th gear....
From the '97 Ford service manual:
"Drive is the normal selector lever position for most forward driving conditions. This position provides all automatic shifts (first through fourth), apply and release of the torque converterter clutch, and maximum fuel economy during normal operation. Fourth gear (overdrive) may be cancelled by pressing the Transmission Control Switch (TCS) that is located in the shift knob."
