Car Vibrates When Idle And The AC Is On
Car Vibrates When Idle And The AC Is On

Does the car vibrates when idle and ac is on? It’s likely that your AC compressor is the culprit. The compressor is responsible for circulating the refrigerant throughout your AC system, and if it’s not working properly, it can cause your car to vibrate. There are a few symptoms of a faulty AC compressor that you should be aware of:

  • Your car will make a loud, grinding noise when the AC is turned on.
  • The AC may not blow as cold as it used to.
  • Your car may overheat more quickly than usual.

Car Vibrates When Idle And AC Is On

Car Vibrates When Idle And AC Is On

If you notice any of these symptoms, it’s important to take your car to a mechanic and have the compressor checked out. In most cases, a faulty compressor can be repaired or replaced. However, if the damage is severe, you may need to replace your entire AC system.

If your car is vibrating due to a faulty AC compressor, there are a few things you can do to get it fixed: –

  • First, check your car’s warranty coverage. Many automakers will cover the cost of repairing or replacing a defective AC compressor. If your car is no longer under warranty, you can still get it fixed, but you’ll likely have to pay for the repairs yourself.
  • Next, contact your local auto repair shop and ask about their rates for AC compressor replacement or repair. Be sure to get estimates from multiple shops so that you can compare prices and find the best idea.
  • Finally, make sure to ask about any discounts or specials that the shop may be running on AC compressor replacement or repair.

Causes of Car Vibrate When AC is On

Causes of Car Vibrate When AC is On

In almost all cars, there is an air conditioner as a basic feature for our comfort. These basic features can sometimes cause engine problems if you don’t notice the warning signals. The purpose of an air conditioner is to control the interior temperature and keep it cool and comfortable when it is hot outside. The car vibrates when idle and AC is on means there is an problem with the engine or connections and you need to settle the issue very soon. 

Frequently Asked Question

Que 1: Is There A Reason Why My Engine Vibrates At Idle When The AC Is On?

Ans 1: There are many reasons why a vehicle may shake or vibrate, such as faulty spark plugs, poor fuel pressure, or misfires. A faulty idle air control valve may also cause the engine’s idle speed to drop below the normal idling rate, causing the motor to shake or vibrate more than usual.

Que 2: Does My AC Make A Knocking Sound When I Turn It On?

Ans 2: There is a loose fan on the compressor. A loose fan or blade might be causing the knocking noise from your AC compressor (the outdoor unit). The blades of the fan can bang into other parts of the compressor, causing a loud knocking sound.

Also Read: How To Read A Battery Charger: A Guide For Beginners


By following these tips, you can save money and get your car fixed quickly. By notifying the above causes, you can determine why the car vibrates when idle and the AC is on. It needs to be fixed by a mechanic.

Car vibrations caused by AC can cause expensive maintenance and interfere with the engine’s performance if you never notice them. Keep an eye on your car’s regular maintenance so you don’t fall into trouble. The engine rarely works properly when we start it after a long time. You must prepare your car for driving before you begin driving regularly.

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I'm David, and I love cars - especially writing about them! I'm the owner of, where I write car reviews and offer advice on car technical issues. My passion for cars started at a young age, when I would help my dad work on our family's vehicles. These days, I spend most of my time test-driving new models and researching the latest automotive technology. I'm always looking for a new challenge, so be sure to check out my website for the latest in car reviews and news. Thanks for reading!


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