No Fourth Gear, or Slips in Fourth Gear
WARNING: This page is about a different variant/trim than selected.
No Fourth Gear, Slips in Fourth Gear
| Checks | Causes |
|---|---|
| Intermediate/Fourth Band & Servo | No apply or slipping |
| Servo Piston (77) | Broken or binding |
| Servo Piston Seals (78, 79) | Leaking |
| Servo Pin (76) and Springs (78, 79) | Binding |
| Servo Cover (80) | Broken, loose, or leaking |
| Band (100) | Broken, worn, or out of position |
| Case (1) | Cracked at the band seat |
| Band Apply Fluid Routing | Fluid leak and fluid restricting |
|
|
| 1-2 Shift Solenoid Valve (305) |
|
| 3-4 Shift Valve (319) | Stuck in the downshifted position |
| Manual Valve (800) | Misaligned in Manual Third gear |
| 3-4 Accumulator |
|
| 3-4 Accumulator Valve (323) | Stuck |
| Line Pressure | Low pressure Refer to High or Low Line Pressure . |
| Direct Clutch | A low capacity will cause a failure in the Fourth gear |
| PSA | Hydraulic or electrical malfunction |