Why Doesn't the Car Move After Shifting Gears?

[ManuelLynn]

Reasons why the car doesn't move after shifting gears: This is a functional comprehensive fault involving the clutch, transmission, and drive axle. When diagnosing, the fault location should be determined first, starting with checking the condition of both wheels. The diagnostic sequence generally proceeds from the drive wheels forward through the rear axle to the drive shaft, then to the transmission, and finally to the clutch. If the car is started in a certain gear and the drive shaft does not rotate, it indicates a fault in the transmission. Remove the transmission cover and inspect whether the transmission shift fork is broken or if the guide block fixing screws are loose. If the above checks are normal, proceed with a gear-shifting test. If the second shaft does not rotate in a certain gear, it means the half-round key of that gear's gear is cut off. If the second shaft rotates in direct drive but does not rotate in any other gear, it indicates that the support bearings at both ends of the intermediate shaft are disassembled, causing the intermediate shaft to drop.