What are the reasons for the Buick Excelle stalling with vibration at idle?

[IsabellaAnn]

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.

[Micah]

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.

[McChristian]

My Buick Excelle keeps shaking at idle, and once it even stalled, which really freaked me out. It might be because the air filter is too dirty and clogging the intake, or the poor quality of the gasoline affecting combustion. I make it a habit to fill up at reputable gas stations like PetroChina to minimize issues. Idle shaking and stalling could also be due to engine carbon buildup, which gets worse with frequent stop-and-go driving in the city. Occasionally check the spark plugs and replace them if worn out. After that stall, I took it to the repair shop, and the mechanic said the throttle body needed cleaning—it worked much better afterward. Develop a habit of regular maintenance; don’t wait until something goes wrong—safety comes first. Clean out the carbon deposits; turn off the engine at long traffic lights to save fuel and reduce risks. Keep the fuel system clean, as clogged fuel injectors can cause trouble.

[StMila]

The car stalls when idling, often due to a faulty idle control valve that fails to regulate the air intake. A malfunctioning oxygen sensor or throttle position sensor can mislead the ECU into incorrect adjustments. Loose sensor wiring may also cause signal interruptions. Use a diagnostic tool to read the fault codes for quick identification of the issue. I once experienced this and found the idle valve was aged; replacing it stabilized the idle. Regular checks of sensor conditions can prevent such problems.

[LylaAnn]

My Buick Excelle has been around for quite some years, and it shakes severely at idle, sometimes even stalling. Recalling the maintenance history, the key reason is that carbon deposits haven't been cleaned for a long time. Carbon buildup clogs the intake manifold, affecting the air-fuel mixture, coupled with worn spark plug electrodes causing poor ignition. Aging components like a weakened fuel pump further complicate things by insufficient fuel supply. It's recommended to perform an engine cleaning every 10,000 to 20,000 kilometers, especially for city driving with frequent idling. Last time I had the spark plugs replaced during repairs, it immediately ran smoother. Don’t skimp on maintenance to save money—safety comes first. Also, check for potential issues like loose wiring harnesses, prioritizing prevention.