What Causes the Jerking During Startup of the Verano?
2 Answers
Buick Verano's jerking during startup is due to reasons such as automatic transmission acceleration and upshifting, damaged solenoid valves, and high transmission temperature. The details are as follows: Automatic Transmission Acceleration and Upshifting: Jerking during startup in an automatic transmission car is a normal phenomenon. If you want to accelerate quickly while driving, you need to press the accelerator deeply. At this time, the automatic transmission will automatically downshift to increase the engine speed. When the speed reaches a certain level, it will upshift again. After upshifting, the speed will drop significantly, resulting in a relatively obvious jerking sensation. Damaged Solenoid Valves: Damaged solenoid valves are an important cause of jerking. The sensation of jerking is like being kicked from behind. Jerking can be divided into occasional and fixed-time occurrences. The distinction is simple: occasional jerking occurs without any pattern, while fixed jerking happens at a certain speed or when shifting between specific gears at a fixed speed. High Transmission Temperature: High transmission temperature can degrade the quality and friction characteristics of automatic transmission fluid, increasing friction and wear. This leads to transmission noise, and sludge, impurities, or dirt can also form inside the transmission, such as in the valve body, causing jerking and impact in the transmission.
I've experienced the jerky start issue several times while driving my Verano. It feels like the car suddenly lurches forward, which can be quite startling. Common causes include potential automatic transmission problems. The Buick Verano uses a dual-clutch transmission that's prone to jerking, possibly due to oil accumulation in valves or worn clutch plates, leading to unstable power output during acceleration. Poor engine combustion can also contribute, such as aging spark plugs or faulty ignition coils causing unstable idle and subsequent jerking. Other factors might be incorrect sensor signals from the ECU (Electronic Control Unit) or driving habits like aggressive throttle input. I'd recommend checking your transmission fluid and maintenance records first - adding some fuel additive significantly improved my own vehicle. For safety, if the jerking is severe, visit a professional repair shop immediately to prevent potential driving hazards.
