The transmission is connected to the engine and the frame of the car by mounts. If these mounts become loose, they can cause the transmission to rattle when the car is in motion. This is a common problem with older Neons.
Worn Transmission Gears
If the transmission gears are worn, they can cause a rattling noise when the car is in motion. This is a more serious problem, and it can eventually lead to transmission failure.
Low Transmission Fluid
If the transmission fluid is low, it can cause the gears to overheat and make a rattling noise. This can also lead to transmission problems in addition to rattling, so it’s important to check your transmission fluid level regularly.
Damaged Transmission Input Shaft Bearing
The input shaft bearing is located where the transmission shaft meets the engine. If this bearing becomes damaged or worn, it can cause the transmission to make a rattling noise.
Damaged Transmission Output Shaft Bearing
The output shaft bearing is located where the transmission shaft meets the axle. If this bearing becomes damaged or worn, it can cause the transmission to make a rattling noise.
