What Causes Jerking at Speeds Above 100 km/h?
2 Answers
There may be three reasons for jerking at speeds above 100 km/h. The specific explanations are as follows: 1. Carbon deposits: Excessive carbon buildup in the throttle body, fuel injectors, or intake manifold. Since the key components of carbon deposits are wax and gum deposits from fuel, it is best to minimize the gum content in fuel. Carbon deposits can cause various malfunctions, and some vehicles may experience jerking due to carbon deposits. It is recommended to regularly clean carbon deposits. 2. Fuel: Poor fuel quality leading to incomplete combustion. While you cannot change the quality of the fuel, avoid using low-quality fuel of unknown origin. 3. Electrical faults: Issues with spark plugs, ignition coils, etc., causing misfires. These need to be inspected and repaired promptly to avoid further safety hazards.
I've experienced that jerking sensation when driving over 100 km/h on the highway, and it was really unsettling at the time. This kind of issue mostly stems from the power transmission system. The most common cause is deteriorated transmission fluid that hasn't been changed for too long, leading to reduced lubrication performance and resulting in gear shift shocks. It could also be severely worn clutch plates, especially in manual transmission vehicles with over 70,000-80,000 kilometers. Additionally, aged spark plugs or cracked ignition coils can cause misfires at high speeds, feeling like a sudden jerk. A clogged air filter restricting airflow can create similar symptoms, making the engine feel like it's gasping for breath. For turbocharged vehicles, it might be a vacuum hose leak in the turbocharger causing unstable pressure. Finally, check the fuel quality in your tank - using substandard gasoline from small gas stations can also cause jerking. Never delay addressing such high-speed issues - get it checked immediately.
