Shift Point Road Test
NOTE:
Use the following road test procedure to verify shift control valves are operating correctly:
- Drive vehicle to bring engine and transaxle to operating temperature. Operate vehicle with gear selector in "OD" position.
- Apply MINIMUM throttle and observe and record upshift speeds. Observe and record speed at which converter clutch applies. See SHIFT SPEED SPECIFICATIONS .
- Stop vehicle and move gear selector to "D" position. Repeat step 2). Transaxle should make all upshifts except 3rd-to-4th. Torque converter lock-up should occur above 28.6 MPH (46 km/h).
- Depress throttle pedal to Wide Open Throttle (WOT) position. Converter clutch should release and transaxle should downshift 3-2 or 3-1 depending on vehicle speed.
- With vehicle speed greater than 30 MPH (48 km/h), move gear selector from "D" to "1" position and release accelerator pedal. Transaxle should immediately downshift to 2nd gear. When vehicle speed drops to less than 20 MPH (32 km/h), transaxle should downshift into 1st gear.
- If transaxle fails to shift as described above, perform EEC-V QUICK TEST procedure. See AUTO TRANS DIAGNOSIS - AX4N ELECTRONIC article.
SHIFT SPEED SPECIFICATIONS
| Shift | MPH Range | |
|---|---|---|
| Minimum Throttle | ||
| 1-2 | 8-10 | |
| 2-3 | 16-19 | |
| 3-4 | 33-35 | |
| Closed Throttle | ||
| 4-3 | 30-32 | |
| 3-2 | 11-13 | |
| 2-1 | 7-9 | |
| Part Throttle | ||
| 1-2 | 8-38 | |
| 2-3 | 16-70 | |
| 3-4 | 33-111 | |
| 4-3 | 33-95 | |
| 3-2 | 16-65 | |
| 2-1 | 7-32 | |
| Wide Open Throttle | ||
| 1-2 | 32-38 | |
| 2-3 | 66-70 | |
| 3-4 | 95-111 | |
| 4-3 | 85-95 | |
| 3-2 | 60-65 | |
| 2-1 | 28-32 | |