What Causes the Clicking Sound When Shifting Gears in an Automatic Transmission?

2 Answers
JuliannaFitz
07/25/25 7:16am
Automatic transmission gear shifting produces a clicking sound due to engine gear failure; large valve clearance when the engine is cold; transmission failure, etc. Automatic transmission gear shifting: Automatic transmission vehicles have protection and interlock mechanisms for gear shifting. Accidentally shifting from D to R or P while driving can be dangerous, but switching between D and N is allowed at any time, including while driving. Avoid coasting in neutral: Coasting in neutral with an automatic transmission does not save fuel. Prolonged coasting in neutral can lead to insufficient oil pressure in the hydraulic lines of the automatic transmission, increasing friction, reducing lubrication effectiveness, and damaging the internal friction plates of the transmission.
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LaAubrey
08/10/25 6:28pm
I've noticed that automatic transmission cars often make a clicking sound when shifting gears. Based on my driving experience, this is mostly caused by aged or insufficient transmission fluid. Low fluid levels increase friction between internal components, resulting in noise. Sometimes, the shift lever linkage or cables become loose and produce clicking sounds, especially noticeable in older vehicles. Additionally, if there's a fault in the transmission's electronic control system, such as a failed sensor, it can easily generate similar noises. I recommend first checking the transmission fluid level and color—if it's dark or too low, it's time for a replacement. When shifting gears, avoid applying too much force; try gentle pushes instead. If the noise persists, it's best to visit a professional repair shop. Ignoring it may accelerate transmission wear and compromise safe driving.
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