What Causes the Clicking Sound When Shifting Gears in an Automatic Transmission Car?
2 Answers
The causes of the clicking sound when shifting gears in an automatic transmission car are: 1. The release bearing lacks lubricant, causing dry friction or bearing damage; 2. There is no clearance between the release bearing and the inner end of the release lever; 3. Dirt between the release bearing sleeve and the guide tube, or the detachment of the release bearing return spring and the pedal return spring, leading to poor return of the release bearing; 4. Loose fit between the spline hole of the driven plate and its spline shaft; 5. Worn and loose fit between the drive pins of the double-disc clutch and the pin holes of the intermediate pressure plate and the pressure plate. 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.
I've encountered the issue of a clicking sound when shifting gears in an automatic transmission multiple times. Common causes include not pressing the brake pedal firmly enough or low transmission fluid, which leads to excessive friction among internal mechanical components and produces noise. If the fluid is dirty or low, air bubbles can form and cause a clicking sound during gear shifts. I've also noticed that wear points in the shift lever mechanism can produce similar noises. Another factor could be a faulty sensor or solenoid valve, causing the control system to misjudge and repeatedly operate, resulting in noise. I recommend that drivers try the following when parked: ensure the brake is fully depressed before shifting gears—don't shift with just a light tap; regularly check the color and level of the transmission fluid, as changing it every six months can prevent most issues. Delaying repairs could lead to more expensive fixes, such as gearset damage. For safety, it's best to have a professional shop diagnose the problem for peace of mind.
