What Causes Car Jerking?
2 Answers
The reasons for car jerking are: 1. Engine oil passage blockage; 2. Dirty transmission oil clogging the oil passage; 3. Damaged transmission solenoid valve; 4. Forgetting to release the handbrake; 5. Irregular wear of the clutch; 6. Damaged solenoid valve; 7. Some engine cylinders not working; 8. Poor volatility of low-quality fuel. The solutions for car jerking are: 1. Check the transmission temperature and cooling system; 2. Replace the transmission oil; 3. Check if the internal valve body of the transmission is damaged and needs replacement; 4. Check for carbon deposits in the engine valves and intake pipe that need cleaning.
As a seasoned driver with 30 years of experience, I've encountered plenty of issues with car jerking, mainly stemming from the engine or transmission. If the transmission fluid hasn't been changed for too long, it gets dirty and clogs the oil passages, causing rough shifting. Worn or dirty spark plugs lead to uneven engine power output, resulting in jerky acceleration. I often come across faulty mass airflow sensors, which cause the computer to incorrectly adjust fuel injection, making the car behave erratically. Don’t overlook the fuel system either—low fuel pump pressure or a clogged filter reduces fuel supply, especially noticeable when going uphill. Fixing these isn’t too hard; regular oil changes and spark plug checks can prevent minor issues from becoming major problems. Ignoring them long-term accelerates component wear, costing more in the long run.
