Why does my car rattle when AC is on?
Compressor Clutch: When the AC turns on, it puts the entire engine under a more massive load. This increased load can cause rattles from things like the power steering pump pulley, loose parts (even a flexible hood prop rod can rattle under the additional vibrations created by operating your air conditioner).
How do I stop my AC from rattling?
Rattling noise cause #1: Detached panels The fix: Ensure that all panels (on your outdoor and indoor units) are secure and tighten any loose screws. If your AC is still making a rattling noise, contact a professional.
Why is my AC making so much noise?
If you hear loud buzzing noises coming from your air conditioner, it’s very likely that it is malfunctioning. Typically, the issue is either loose parts, missing or broken isolation feet, refrigerant leaks, or a malfunctioning compressor.
When does your car make a rattling sound?
Recently it has started to make a rattling sound; not painfully loud but a clearly noticable and sounds somewhat metalic. This only happens when it is in gear (Drive or Reverse) and does not occur in Park or Neutral.
Why does my air conditioner make a rattling noise?
This certainly could be why your air conditioner is making noise, especially if it sounds like rattling metal. There’s a lot of vibration when the compressor starts up, and rattling which occurs only during startup is a pretty good clue that hardware is the culprit.
What to do if your AC rattles when you turn it on?
If you hear a rattle in your car, have a mobile technician from YourMechanic inspect the cause of the sound. The most popular service booked by readers of this article is AC is not working Inspection. Yourmechanic’s technicians bring the dealership to you by performing this job at your home or office 7 days a week between 7AM-9PM.
Why are my heat shields rattling under my car?
These heat shields are made of thin pieces of metal, and are placed between these components and the underfloor of the vehicle. They have become a common source of rattling noises under the car. Over time, heat shields can rust out or become loose and get detached from their mountings.