Road Test
- Ensure shift linkage, fluid level and condition are okay. Add fluid and adjust control cable as necessary. Road test vehicle, operating transaxle in each gear range. Check for slipping and any variation in shifting.
- If vehicle operates properly at highway speeds, but has poor acceleration, torque converter stator clutch may be slipping. If acceleration through all gears is normal, but high throttle opening is required to maintain highway speeds, torque converter stator clutch may be seized. Torque converter must be replaced if stator clutch is defective.
- In most cases, a slipping clutch can be determined by noting transaxle operation in all gear ranges and gearshift lever positions, and noting which clutches are applied under each condition. See CLUTCH APPLICATIONS under TROUBLE SHOOTING.
- Process of elimination can be used to detect any component which slips and to confirm proper operation of good components. However, although road test analysis can usually diagnose slipping components, actual malfunction usually cannot be decided. Practically any condition can be caused by leaking hydraulic circuits or sticking valves.
NOTE:
Clutch volume may be checked using scan tool to determine if clutch is defective.