Slips in First Gear
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Slips in 1st Gear
| Checks |
Causes |
| Forward Clutch Assembly (646-651) |
- Clutch plates worn
- Porosity or damage in forward clutch piston
- Forward clutch piston inner and outer seals missing, cut or damaged
- Damaged forward clutch housing
- Forward clutch housing retainer and ball assembly not sealing or damaged
|
| Forward Clutch Accumulator (353-358) |
- Piston seal missing, cut or damaged
- Piston out of its bore
- Porosity in the piston or valve body
- Stuck abuse valve
|
| Input Housing and Shaft Assembly (621) |
Turbine shaft seals missing, cut or damaged |
| Valve Body (60) |
- 1-2 Accumulator valve stuck
- Face not flat, damaged lands or interconnected passages
- Spacer plate or gaskets incorrect, mispositioned or damaged
|
| Low Roller Clutch (678) |
- Damage to lugs to inner ramps
- Rollers not free moving
- Inadequate spring tension
- Damage to inner splines
- Lube passage plugged
|
| Torque Converter (1) |
Stator roller clutch not holding |
| 1-2 Accumulator Assembly (55-57, 104) |
- Porosity in piston or 1-2 Accumulator cover and pin assembly
- Damaged ring grooves on piston
- Piston seal missing, cut or damaged
- Valve body to spacer plate gasket at 1-2 Accumulator cover, missing or damaged
- Leak between piston and pin
- Broken 1-2 Accumulator spring
|
| Line Pressure |
Refer to Oil Pressure High or Low . |
| 2-4 Servo Assembly (13-28) |
4th Servo piston in backward |