Shift Point Road Test

Road Testing Vehicle

The following Shift Point Road Test and Torque Converter Clutch Operation Test provide diagnostic information on transmission shift controls and torque converter operation.

Shift Point Road Test

NOTE: Always drive the vehicle in a safe manner according to driving conditions and obey all traffic laws.

This test verifies that the shift control system is operating correctly.
1. Bring engine and transmission up to normal operating temperature.
2. Operate the vehicle with the transmission range selector lever in (D) range.
3. Apply minimum throttle and observe the speeds at which the upshift occurs and the torque converter engages. Refer to the Automatic Transmission Special Specification Bulletin Issue available from Ford Customer Service Division.
4. With the vehicle in OVERDRIVE (fourth gear), depress the transmission control switch. The transmission should downshift to third gear. Remove foot from accelerator pedal; engine braking should occur.
5. Press accelerator pedal to floor (wide-open throttle). Transmission should shift from third to second gear or third to first, depending on vehicle speed. Torque converter clutch should disengage and then reapply.
6. With vehicle (D) range above 80 km/h (50 mph) and less than half throttle, move the transmission range selector lever from (D) range to MANUAL 2 range and remove foot from accelerator pedal. The transmission should immediately downshift into second gear. With the vehicle remaining in MANUAL 2 range, move transmission range selector lever into MANUAL 1 range. Transmission should downshift into first gear at speeds BELOW 48-56 km/h (30-35 mph).
7. If transmission fails to upshift/downshift or torque converter clutch does not apply and release, refer to Diagnosis By Symptom for concern diagnosis. 4R100