What Causes the Jerking Impact When Shifting into Reverse Gear in an Automatic Transmission?

[OCatherine]

Here are the reasons for the jerking impact when shifting into reverse gear in an automatic transmission: 1. Electronic linkage between the brake system and the automatic transmission: If the clutch is not fully depressed when shifting gears, it can cause gear damage; 2. Shifting into gear at idle: When the engine speed has not yet stabilized and the gear is shifted into reverse, it can cause a strong impact on the transmission; 3. Reverse gear lacks a synchronizer: The synchronizer is a device inside the transmission that ensures smooth gear engagement when changing gears while driving. Additional information: An automatic transmission does not require the driver to manually shift gears; the vehicle automatically selects the appropriate gear based on driving speed and traffic conditions.

[Winifred]

I've been driving for twenty years and have repaired countless automatic transmissions. Common causes of a 'clunk' or impact when shifting into reverse include worn clutch plates inside the transmission, insufficient or degraded transmission fluid. The vibration from clutch plate engagement creates a 'clunk' sound, and low or dirty fluid affects lubrication. Sometimes, mechanical issues like loose gears or control system failures are to blame, especially after frequent use. First, check the transmission fluid level and color—if it’s dark or smells burnt, replace it immediately and have a professional inspect the components. Regular transmission maintenance prevents worsening issues; neglecting it could damage the entire unit, leading to costly repairs. Safety comes first.

[Bryan]

I drive a lot for family use, and often experience a noticeable 'clunk' when shifting into reverse while parking in the city. This phenomenon may be caused by a loose driveshaft or transmission fluid temperature issues; aged oil tends to thicken, leading to poor lubrication and increased gear impact during reverse shifts. It's particularly noticeable during cold starts or frequent gear changes, affecting handling and safety. A mechanic mentioned that female drivers often overlook fluid maintenance, so it's best to check oil levels regularly to avoid parking mishaps. They advised paying attention to minor abnormalities during daily driving and addressing them promptly for low-cost maintenance, ensuring family peace of mind.

[VonJustin]

Experienced in car modifications, a clunk sound when shifting to reverse is usually caused by clutch or planetary gear wear. Poor transmission fluid quality, unstable oil pressure, and strong impacts make older cars more prone to issues, often solved by reinforcing components. Recommend checking fluid levels yourself for a quick fix; if that doesn't work, consult a professional for diagnosis—saving time, money, and adding fun.