What are the causes of abnormal noise inside the Haval H6 at idle?

2 Answers
StWilliam
08/30/25 3:44am
Haval H6 producing abnormal noise inside the cabin at idle is a normal phenomenon. Introduction to vehicle idle: Car idle refers to the engine running without any load, with the accelerator pedal fully released. The hazards of high idle include increased fuel consumption, elevated engine operating temperature, and accelerated mechanical wear. The hazards of low idle include stalling during startup, which can damage the engine and starter if it occurs frequently. Additionally, excessively low idle may lead to stalling while driving, and long-term operation can cause carbon buildup in the engine cylinders, resulting in poor acceleration. Prerequisites for adjusting idle: normal engine temperature, proper valve clearance, normal ignition system condition, good sealing of all pipes, fully open choke valve, and tightly closed throttle valve. Precautions for car idle: Check if the engine vacuum tube is leaking. If a leak is confirmed, replace the vacuum tube. Check if the engine fault light on the dashboard is flashing. If an engine fault is detected, immediately go to a 4S shop for computer diagnostics to identify the component causing unstable idle, including sensor failure, engine combustion issues, throttle position sensor failure, etc. Check if the throttle valve is dirty. Also, inspect for carbon buildup inside the throttle valve and idle motor.
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DiDamian
09/11/25 7:46am
After years of driving, I've noticed that abnormal noises inside the Haval H6 at idle are quite common, mostly due to loose or worn engine belts, which produce a squeaking sound during low-speed operation. Other causes include the air conditioning compressor fan being unbalanced at idle, creating noise, or aging rubber engine mounts causing component vibrations and a humming sound. Sometimes, loose interior trim like the armrest or door panels rubbing can also produce creaking noises. If you hear unusual sounds, it's advisable to immediately inspect the engine compartment and use tools to slightly tighten the belt. If the issue persists, a visit to the repair shop for part replacement might be necessary. Although idle noise may seem like a minor issue, neglecting it can lead to belt breakage and affect driving safety, so don't delay addressing it. Regular maintenance checks on belts and fasteners can prevent many problems.
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