| Diagnosis and Testing This test verifies that the shift control system is operating correctly. - Bring the engine and transaxle up to normal operating temperature.
- Operate the vehicle with the selector lever in the "D" (DRIVE) position.
- Apply minimum throttle and observe the speeds at which upshift occurs.
- Press the accelerator pedal rapidly to the floor (kickdown). The transaxle should shift from:
- 4th to 3rd, or 4th to 2nd, dependent on vehicle speed
- 3rd to 2nd, or 3rd to 1st, dependent on vehicle speed
- Select manual shift mode and make sure that the transmission will manually upshift each gear to 4th gear and downshift each gear to 1st gear dependent on vehicle speed.
- Manually select 3rd gear at approximately 90 km/h (56 mph). Gently accelerate to 110 km/h (68 mph) and hold that speed. A slight drop in engine speed should be observed.
- If the transaxle fails to upshift or downshift, or the torque converter clutch does not apply or release,
REFER to: Diagnosis By Symptom (307-01A Automatic Transmission/Transaxle - Vehicles With: 4-Speed Automatic Transmission (4F27E), Diagnosis and Testing).
Shift Speeds Chart - Vehicles with 1.6L Duratec-16V (Sigma) engine | Throttle Position | Shift | Final Drive Ratio 4.2:1 | | km/h | mph | | Closed | 4 - 3 | 35 | 22 | | Closed | 3 - 2 | 19 | 12 | | Closed | 2 - 1 | 12 | 7 | | WOT | 1 - 2 | 57 | 35 | | WOT | 2 - 3 | 108 | 67 | | WOT | 3 - 4 * | 180 | 112 | * To attain maximum speed the vehicle must be in 3rd gear. The 3 - 4 upshift will not occur with wide open throttle (WOT). Upshift is achieved by releasing the throttle slightly at maximum speed. Shift Speeds Chart - Vehicles with 2.0L Duratec-HE (MI4) engine NOTE:The transmission will downshift directly from 3-1 with a closed throttle. | Throttle Position | Shift | Final Drive Ratio 4.2:1 | | km/h | mph | | Closed | 4 - 3 | 28 | 17 | | Closed | 3 - 1 | 14 | 9 | | WOT | 1 - 2 | 57 | 35 | | WOT | 2 - 3 | 108 | 67 | | WOT | 3 - 4 | 154 | 96 | |
