What Causes Strong Gear Shift Jerkiness in the Transmission?
1 Answers
Strong gear shift jerkiness in the transmission may be caused by clutch pressure leakage in the transmission, blocked or poor transmission oil flow, the use of low-quality transmission oil, or damaged solenoid valves. While mild shift jerkiness is normal, severe jerkiness is abnormal, and common fault points may include the shift solenoid valve or control module in the automatic transmission. The specific reasons are as follows: 1. Clutch pressure leakage inside the transmission: Check for clutch damage and perform repairs. 2. Poor transmission oil flow: This can be due to worn oil passages, long intervals between transmission oil changes leading to oil degradation and reduced lubrication, or a dirty transmission filter that fails to effectively filter out wear particles, allowing them to enter the valve body. 3. Incorrect transmission oil level: Verify whether the transmission oil is at the standard level, as both insufficient and excessive oil can cause this issue. Check the transmission dipstick during vehicle startup to ensure it is within the standard range. 4. Damaged solenoid valve: Sludge circulating in the transmission oil can clog the oil passages in the valve body, leading to jerkiness. Over time, this can cause a series of transmission problems such as overheating, harsh shifting, and slipping.