What Causes the Particularly Strong Jerking Sensation When Releasing the Throttle in a Manual Transmission?

[StJackson]

Manual transmission vehicles experiencing jerking sensations when releasing the throttle can be attributed to issues such as transmission gear programming settings and transmission cooling malfunctions. Among these, internal contamination and impurities in the transmission can prevent effective regulation of transmission oil pressure, leading to jerking when releasing the throttle. Below are other potential causes of jerking: 1. Poor Transmission Cooling: Inadequate cooling can cause the transmission to overheat, affecting the performance of the transmission fluid. If the temperature exceeds 120°C, the rubber sealing materials in the transmission may harden, leading to leaks and subsequent jerking due to unstable oil pressure. 2. Carbon Buildup in the Fuel Injectors: Carbon deposits or minor blockages in the fuel injectors, as well as poor atomization, can easily result in irregular fuel injection, causing jerking. Additionally, excessive carbon buildup in the throttle body from prolonged neglect can alter the throttle opening, resulting in jerking when releasing the throttle.