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What Are the Reasons for Noise When Shifting Gears in an Automatic Transmission?

1 Answers

AlexisDella

07/29/25 4:15pm

The reasons for noise when shifting gears in an automatic transmission are: 1. Issues with the generator gear; 2. Large valve clearance and poor lubrication when the engine is cold; 3. Engaging the P gear before applying the handbrake when parking on a slope; 4. Shifting gears before the vehicle comes to a complete stop; 5. Problems with the transmission. For example, if there is a clicking sound when shifting from a cold to a hot engine state, lasting about 3 minutes, this is a normal phenomenon. An automatic transmission eliminates the need for the driver to manually shift gears, as the vehicle automatically selects the appropriate gear based on driving speed and traffic conditions. Generally, automatic transmission vehicles have six gear positions, listed from top to bottom as: P, R, N, D, S, L.

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