What are the causes of transmission jerking?
2 Answers
The causes of transmission jerking are: 1. Mismatch between engine speed and gear: Issues with the timing of gear shifting; 2. Mismatch between vehicle speed and gear: Problems with judging speed and gear selection; 3. Need for improvement in driving skills: Familiarity with the vehicle's performance will gradually reduce jerking, which is a problem of driver unfamiliarity with the vehicle; 4. If it's a quality issue with the transmission, symptoms may include difficulty engaging gears, gear wear, or the transmission's inability to properly control gear engagement, leading to sudden increases in engine speed. The relationship between engine speed, output torque, and gear engagement is crucial. Engine speed, vehicle speed, and gear selection must be mutually matched, with engine output torque maintaining this balance.
I've been repairing cars for over a decade, and transmission jerking is really quite common. The main issue is usually with the transmission fluid – either the level is too low or the fluid has degraded, reducing lubrication effectiveness, making gear shifts feel like they're getting stuck. Clutch wear is another critical factor, especially for manual transmissions driven aggressively; when the clutch plates wear thin, they're prone to shaking. Then there's the solenoid valve – it controls the shifting oil pressure, and if it malfunctions, the transmission response becomes sluggish. Don't underestimate driving habits either; new drivers often ride the clutch while accelerating, which can easily cause jerking. If problems arise right after a transmission fluid change, it's likely due to insufficient fluid or improper operation, so it's best to get it checked at a professional repair shop as soon as possible.
