What Causes the Abnormal Noise in the Roof Air Conditioner of Wuling Hongguang S?
2 Answers
The causes of abnormal noise in the roof air conditioner of Wuling Hongguang S are as follows: 1. Loose wiring harness in the roof: The abnormal noise is caused by the loose wiring harness inside the roof, which requires removing the roof and adding soundproof padding. 2. Lack of lubrication in the sliding track: The grease on the sliding guide rails and seals of the panoramic sunroof may fail due to factors such as temperature, humidity, and dirt, leading to abnormal noise over time. Below is more information about Wuling Hongguang: 1. Brand History: Wuling Hongguang is the first self-developed crossover product between commercial vehicles and passenger vehicles launched by SAIC-GM-Wuling. With its smooth exterior design, diverse and practical spacious driving space, perfect balance between power and economy, and strong performance in handling and safety, it has subverted the traditional impression of commercial vehicles. 2. Brand Advantages: Wuling Hongguang has created a new niche in the commercial vehicle market dominated by large vehicles with its small displacement, clever design, exquisite interior, and powerful cross-level performance.
I've been driving cars like the Wuling Hongguang for many years, and roof air conditioning noises are quite common. Most of the time, it's a problem with the fan—like loose or detached fan blades hitting nearby metal parts when starting up, causing constant rattling. Sometimes, foreign objects like leaves or small stones get stuck inside, creating strange noises when spinning. Another possibility is the aging or jamming of the blower motor bearings, producing a humming sound due to friction during operation. The ventilation ducts in the roof can also loosen, causing resonance and buzzing when driving on bumpy roads. Hot weather and using the AC can worsen the issue. This isn't just annoying—long-term neglect may damage fan components and reduce cooling efficiency. I recommend getting it checked at a repair shop immediately instead of DIY disassembly, as it's easy to damage wiring or plastic parts. Regular maintenance can prevent such faults, especially in older cars prone to noises.
