For 1990-2009 cars

#### No Engine Braking; All Manual Ranges

Checks | Causes
--- | ---
Coast Clutch | No apply or slipping
Piston and Seal Assembly (504) | Binding, cracked, or leaking
Clutch Plates (508, 509) | Worn friction or broken splines
Springs (505) | Binding
Direct & Coast Clutch Housing and Input Shaft (502) |

• | Damaged or cracked

• | Fluid feed holes are restricted

Housing Retainer and Ball Assembly | Missing or loose
Coast Clutch Fluid Routing | Fluid leak or restriction

• | Valve Body Gaskets and Spacer Plate

• | Channel Plate and Gasket

• | Driven Sprocket Support

• | Porosity

• | Misalignment

• | Looseness

• | Fluid restriction

• | Fluid leak across the channels

Driven Sprocket Support Seals | Leaking
Input Shaft (502) |

• | Leaking seals

• | Damaged or misaligned sleeve

Oil Level or Line Pressure | Low Pressure Refer to High or Low Line Pressure .
3-4 Shift Valve (319) | Stuck in Fourth gear position, No coast clutch apply
Manual Valve or Shift Linkage (800) | Misaligned