What to Do When the Car Makes a Squeaking Noise When the Air Conditioner is Turned On?
2 Answers
Solutions for the squeaking noise when the car's air conditioner is turned on are as follows: 1. Adjust the compressor's position bolt: The air conditioner pulley and belt may slip, producing a sharp friction noise during the process. Check if there is oil on the belt causing the slip, and clean it if necessary. If not, adjust the compressor's position bolt to tighten the belt, increasing friction. 2. Adjust the belt tension: If the noise is due to a loose belt, press the belt to check its tension. If it's too loose, tighten it. If the belt is worn out, replace it. 3. Replace the tensioner pulley: A damaged belt tensioner pulley can also cause noise, so it should be replaced. 4. Clean the blower and ventilation ducts: Foreign objects in the blower or ventilation ducts can also produce noise, so they should be cleaned.
I've been repairing cars for over a decade, and squeaky air conditioning issues are quite common. The problem usually lies with the AC belt – whether it's aged, deformed, or not properly tensioned, causing friction and squeaking when the AC is on. Worn bearings in the compressor can produce similar noises, with the compressor continuously making unusual sounds. Loose fan blades or a dirty AC filter can also disrupt airflow, leading to noise. You can start by opening the engine bay and turning on the AC to locate the source of the noise. If it's a belt issue, try adjusting the tension or replacing the belt altogether. For compressor problems, seek professional repair. Ignoring the issue can lead to reduced cooling efficiency or, worse, a broken belt causing other system failures or even accidents while driving. So, check it as soon as you hear the noise – don't delay. Regularly replacing the belt and cleaning the filter can prevent such problems.
