Transmission Jumps Out of Gear

Transmission Jumps Out of Gear

Diagnostic Aids

You should perform a static shift test and a dynamic shift test. The manual transmission can have many conditions that make it jump out of gear. Some of the most common conditions are misalignment of the transmission to engine, a loose clutch housing, or misalignment. The transmission should also be inspected for worn or damaged input bushing to flywheel or worn or damaged input and output shaft bearings. A bent input shaft could also be the result of the transmission jumping out of gear. While inspecting the internal part of the transmission, also inspect for worn detent springs, synchronizers, worn teeth on the gears, or worn thrust washers.

Inspect all internal components for being worn or damaged.

Test Description

The numbers below refer to the step numbers on the diagnostic table.
2. This step inspects for the shift control closeout boot position.
6. This step inspects for worn or damaged transmission or engine mounts.
12. This step inspects for worn or damaged internal components.