What are the causes of idle vibration in the Boyue?
3 Answers
The causes of idle vibration in the Boyue are: excessive carbon buildup in the valves, malfunctioning spark plugs or ignition coils, and issues with the engine mounts. The solutions include: cleaning the throttle body, inspecting the ignition coils and spark plugs, and checking the engine mounts. If the engine mounts are aged, they need to be replaced; if the ignition coils or spark plugs are malfunctioning, they should be replaced directly. The Boyue is a compact SUV launched by Geely Auto, with dimensions of 4519mm in length, 1831mm in width, and 1694mm in height, and a wheelbase of 2670mm. It is equipped with a 1.8T turbocharged engine, delivering a maximum power of 120kw, and is paired with either a 6-speed manual or a 7-speed dual-clutch transmission.
My car's steering wheel always feels like it's dancing at idle, and after several checks, I found out it's a common issue. Mainly, it's because the throttle body is dirty. Over time, sludge can block the intake, affecting the air-fuel mixture concentration, leading to unstable idle. Also, aging spark plugs with reduced ignition efficiency can cause a cylinder to misfire, resulting in shaking. It gets worse with severe carbon buildup, especially on the back of the valves in direct injection engines. When the engine mounts, which act as vibration dampers, age and fail, vibrations are transmitted to the body. Additionally, poor fuel quality with impurities or unstable fuel pump pressure can disrupt combustion. Remember to regularly clean the throttle body, use high-quality engine oil, and avoid prolonged low-speed driving to reduce carbon buildup.
After modifying the intake and exhaust systems, the idle became extremely rough, likely due to compatibility issues. Changing the hardware without ECU recalibration for air-fuel ratio leads to incomplete combustion. Clogged fuel injectors are another culprit, as carbon deposits impair atomization. A faulty oxygen sensor can mislead the ECU about air intake, causing improper mixture ratios. Check ignition coils for cracks or leaks, as weak voltage causes intermittent spark plug firing. Inspect the fuel system too—a clogged fuel filter can allow debris into injectors. If troubleshooting fails, visit a workshop to read error codes instead of wasting money on random part replacements.
