What are the reasons for the Buick Excelle stalling with vibration at idle?
2 Answers
The reasons for the Buick Excelle stalling with vibration at idle are: 1. Vacuum leak in the intake pipe; 2. Dirty throttle body or poor idle control system performance; 3. Unstable fuel pressure. The Buick Excelle is a compact car with body dimensions of: length 4468mm, width 1765mm, height 1469mm, wheelbase 2611mm, and fuel tank capacity of 40 liters. The Buick Excelle is equipped with a 1.3L naturally aspirated engine, with a maximum power of 79kW at 6200rpm, and a maximum torque of 133Nm at 4000rpm.
My Buick Excelle used to shake badly at idle and would stall frequently, making driving quite nerve-wracking. Later, it was found that the spark plugs had aged, causing unstable ignition and rough engine operation. Excessive carbon buildup in the throttle body can also block the air intake, affecting the air-fuel ratio and causing severe shaking at idle. If the fuel injectors are clogged, insufficient fuel supply can similarly lead to stalling. It's advisable to maintain good driving habits, avoid prolonged idling, and develop a routine of regularly replacing spark plugs and cleaning the throttle body. Carbon buildup accumulates over time, especially with frequent idling in city traffic, so getting it cleaned at a professional shop is a small expense to prevent bigger issues. A dirty air filter shouldn’t be overlooked either, as restricted airflow can worsen the problem—replace it during annual maintenance. Older cars are more prone to issues, so timely maintenance is key.
