What Causes the Jerking Sensation When Releasing the Accelerator?

[OEmmett]

The reasons for the jerking sensation when releasing the accelerator are: transmission abnormalities, insufficient transmission fluid, or deterioration of the fluid quality. The working principle of the accelerator is: when the accelerator pedal is pressed, it directly controls the throttle valve, causing the throttle opening to increase and allowing more air to enter the engine. At this point, the ECU commands the fuel injection system to inject more fuel, increasing the engine speed and thus accelerating the vehicle. Precautions for using the accelerator include: 1. Press and release the accelerator pedal gently and smoothly; 2. Coordinate the release of the clutch with pressing the accelerator promptly and precisely; 3. Select appropriate gears to ensure the engine operates mostly at medium speeds and larger throttle openings for fuel efficiency; 4. Before stopping or turning off the engine, release the accelerator pedal first and avoid suddenly revving the engine in neutral.

[StMax]

I've been driving for twenty years, and the most annoying thing is when the car jerks when I let off the gas, like it's having a spasm. This issue is largely related to clutch wear, especially in manual transmission cars. When the clutch disc ages, it gets stuck, and gear shifts become noticeably rough. Additionally, spark plug carbon buildup often causes trouble—poor ignition leads to shaky driving. I remember once ignoring this issue, and it resulted in a transmission oil leak, costing me a fortune to fix. I recommend checking the clutch system early, cleaning carbon deposits every 10,000 to 20,000 kilometers, and maintaining smooth driving. If you're driving an automatic, it might be a transmission control unit issue—have a professional mechanic diagnose it with a computer. Overall, this isn’t a minor problem; it can damage the car and affect driving safety. Addressing it early saves hassle.

[LeBrody]

I'm a new driver. The first time I let off the accelerator after buying the car last year, it jerked as if the engine was protesting, and I almost thought the car was going to break down. I checked with a car-savvy friend, and he said it's most likely a faulty throttle position sensor sending inaccurate signals to the computer system. Dirty spark plugs could also cause misfires, leading to intermittent power. I learned a simple method online: first, check if the engine bay connectors are loose, then clean the throttle body carbon buildup. If that doesn’t work, I’ll have to visit the dealership to test the circuits, as this affects driving smoothness—better not take risks. Normally, when driving, shift gears smoothly and avoid stomping on the accelerator to help mitigate the issue.

[KaydenMarie]

Having worked on cars for many years, I've found that the jerking sensation when letting off the throttle is commonly caused by spark plug issues. Excessive carbon buildup prevents proper sparking, making the car jerk. Just remove them to inspect - replace if dirty, it only takes about ten minutes. Also adjust the clutch clearance, as manual transmission clutch plates wear down significantly causing inconsistent power delivery. Don't forget to check for fuel line blockages or fuel pump failures - insufficient fuel supply can create similar symptoms. I recommend fellow car enthusiasts try these minor repairs themselves to save money and build skills, but leave complex electrical work to professionals to avoid mistakes.