What Causes the Jerking in Haval H6?
2 Answers
Haval H6 experiences jerking during acceleration, which is likely caused by poor fuel system maintenance. Below are the relevant details: Common Causes: Poor fuel system maintenance; excessive carbon buildup in the throttle body, fuel injectors, or intake manifold; substandard fuel quality leading to incomplete combustion; faulty spark plugs or ignition coils causing cylinder misfires, etc. Solutions: If there is jerking during acceleration, it indicates a serious issue with the vehicle's throttle pedal. At this point, the owner needs to replace or repair the throttle pedal. If the problem persists after replacing the throttle pedal, the owner should replace the vehicle's spark plugs and fuel injectors.
The jerking issue with the Haval H6, after driving it for several years, seems to primarily stem from the inherent design characteristics of its dual-clutch transmission (DCT). In low-speed, congested traffic conditions, the DCT is prone to jerking due to less-than-smooth clutch engagement, creating an uncomfortable stop-and-go sensation. This is attributed to the DCT design commonly used in the Haval H6, where excessive friction occurs during the clutch's semi-engaged state or due to less responsive shift logic in the transmission control unit (TCU). I recommend first checking for any available transmission software updates, as Haval frequently releases optimization programs that can alleviate the issue with a simple update. Additionally, unstable engine power output—such as from carbon buildup or aging spark plugs—can exacerbate the jerking by failing to meet the transmission's shifting demands. In summary, while not a major defect, it does affect driving smoothness. During routine maintenance, have a technician scan for fault codes with a diagnostic tool to address any issues early for peace of mind.
