What are the causes of car shaking during sudden acceleration?
2 Answers
Reasons for car shaking during sudden acceleration: 1. Fuel system malfunction: Typically manifests when accelerating the car, pressing the clutch to shift gears, where a sharp drop in RPM is observed accompanied by shaking, especially more noticeable in manual transmission models; 2. Half-shaft malfunction: Usually presents as rhythmic bouncing of the car front when accelerating within a certain speed range, with the shaking disappearing or reducing upon releasing the throttle. Insufficient fuel injection and low fuel line pressure can also cause the car engine to shake during acceleration. Insufficient fuel injection is mainly due to injector malfunction, which could be caused by excessive carbon buildup or mechanical failure, requiring individual testing. If a fault is detected, cleaning the injectors can be tried first; while low fuel pressure is mostly due to fuel pump issues and fuel filter problems. Some car owners neglect the replacement of fuel filters, easily leading to shaking during acceleration.
I just experienced severe shaking during sudden acceleration, which was really nerve-wracking. Looking back, possible causes include ignition system issues, such as worn-out spark plugs failing to ignite properly or damaged ignition coils leading to engine misfires and rough operation. The fuel system is also a suspect—clogged fuel injectors can disrupt fuel supply, causing the engine to vibrate when it doesn't get enough fuel. For manual transmissions, severe clutch wear can result in power delivery lag during sudden acceleration, making the car shake. Unbalanced tires are another common culprit, especially noticeable at high speeds, and heavily worn tires are more prone to causing trouble. I later realized that when such issues arise, it's best not to delay and to get a professional inspection ASAP. Regular maintenance, like replacing spark plugs and balancing tires, can save a lot of hassle and ensure safe driving without unexpected breakdowns.
