For 1990-2009 cars

#### Harsh or Soft 3-4/4-3 Shift Feel

Checks | Cause
--- | ---
DEFINITION: One of the two following conditions occurs during a third to fourth gear steady throttle upshift, or a fourth to third gear coast, or a light to moderate throttle detent downshift:

• | Harsh shift feel -- an unacceptable quick gear change occurs.

• | Soft shift feel -- an unacceptable long gear change occurs.

Automatic Transmission Fluid Level, soft shift only | Low fluid level
Transmission Main Line Pressure | Low or high transmission main line pressure
Oil Filter Assembly, soft shift only |

• | The oil filter assembly (100) is missing, plugged, or damaged.

• | The oil filter seal assembly (101) is missing or damaged.

3-4 Accumulator Assembly |

• | Misassembled upside down 3-4 accumulator assembly

• | Damaged or missing 3-4 accumulator piston oil seal ring (427)

• | A damaged or missing 3-4 accumulator piston outer spring (423)

• | A stuck or binding 3-4 accumulator piston (428)

• | A damaged 3-4 accumulator piston cylinder (421) or O-ring seal (422)

Control Valve Body Assembly |

• | Debris in the passages of the control valve body (301) or spacer plate and gasket assembly (396).

• | Misassembled 3-4 accumulator valve (339, 350, 351) line-up

• | Stuck or binding 3-4 accumulator valve (350)

• | Missing, damaged, or misassembled 3-4 accumulator valve spring (351) or retainer (314A)

Driven Sprocket Support Assembly, soft shift only |

• | A missing or damaged fourth clutch orifice (607)

• | A damaged driven sprocket support assembly (609)

Fourth Clutch Assembly |

• | Worn, damaged, or misassembled clutch plates (500-502)

• | A missing or not seated fourth clutch spring retaining ring (601)

• | A damaged spring assembly (602) or piston (603)

• | Worn or damaged fourth clutch piston seals (604, 605)

2-3 Accumulator | Cut or damaged 2-3 accumulator piston seal (137B)