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What Causes the Jerking Sensation When Shifting Gears in an Automatic Transmission?

1 Answers

OHazel

07/30/25 10:39am

Severe jerking sensations during gear shifts in an automatic transmission can be caused by clutch pressure leakage in the transmission, blocked or sluggish transmission oil passages, incorrect transmission fluid levels, or a damaged solenoid valve. Clutch Pressure Leakage in the Transmission: Inspect the clutch for damage and proceed with repairs. Blocked or Sluggish Transmission Oil Passages: Worn oil passage plates, long intervals without transmission fluid changes leading to degradation and reduced lubrication efficiency, or excessively dirty transmission filters can all cause blocked or sluggish oil passages. The specific cause must be identified and addressed accordingly. Incorrect Transmission Fluid Levels: Ensure the transmission fluid is at the correct level. Both insufficient and excessive fluid can lead to this issue. For vehicles equipped with a transmission dipstick, check if the fluid level is within the standard range while the engine is running. Correct any discrepancies promptly. Damaged Solenoid Valve: Sludge circulating within the transmission can clog the oil passages in the valve body, causing jerking sensations. Over time, this can lead to a series of transmission issues, including overheating, harsh shifts, and slipping. Replacing the solenoid valve is recommended.

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