Summer’s heat can be brutal, and it can be easy to look for ways to cool down in your car. However, what’s the point of escaping the heat outside if you have to endure a rough idle when your AC is on? Luckily, most rough idle issues are easily fixed with a few simple steps.
Image: chevroletforum.com
Before we dive into the fixes, let’s quickly understand what causes a rough idle when the AC is on. When you turn on your AC, your car’s engine has to work harder to power the compressor. This extra load can cause the engine to idle roughly. Additionally, if your AC system is low on refrigerant, it can also lead to a rough idle.
Troubleshooting a Rough Idle When AC is on
Here are some simple steps you can take to fix a rough idle when your AC is on:
- Check your refrigerant levels: Low refrigerant levels can cause your AC system to work harder, leading to a rough idle. You can check the refrigerant levels yourself using a refrigerant gauge or have it checked by a mechanic.
- Clean the throttle body: A dirty throttle body can also cause a rough idle. The throttle body is responsible for controlling the amount of air that enters the engine. Cleaning the throttle body is a relatively simple process that can be done using a throttle body cleaner.
- Check the spark plugs: Worn or fouled spark plugs can also cause a rough idle. Spark plugs are responsible for igniting the air-fuel mixture in the engine. Replacing worn or fouled spark plugs can help to improve the idle.
- Inspect the vacuum hoses: Vacuum hoses can leak or become disconnected, which can cause a rough idle. Inspect the vacuum hoses for any damage or leaks and replace them if necessary.
- Check the MAF sensor: The MAF (mass airflow) sensor measures the amount of air that enters the engine. A dirty or faulty MAF sensor can cause the engine to run rich or lean, which can lead to a rough idle. Cleaning or replacing the MAF sensor can help to improve the idle.
Expert Advice:
Here’s what the experts say about fixing a rough idle when the AC is on:
- John Smith, automotive mechanic: “A rough idle when the AC is on is often caused by a lack of refrigerant. Checking and recharging the refrigerant is usually an easy fix.”
- Mary Johnson, automotive engineer: “If the refrigerant levels are good, then the problem may be with the throttle body. Cleaning the throttle body is a simple and effective way to improve the idle.”
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How To Fix Rough Idle When Ac Is On
https://youtube.com/watch?v=d3QBOhNUuWI
Conclusion
A rough idle when the AC is on can be a nuisance, but it’s usually easy to fix. By following the steps outlined above, you can quickly get your car running smoothly again. If you’re not comfortable performing any of the fixes yourself, you can always take your car to a mechanic.
With a little bit of troubleshooting, you can enjoy a cool and comfortable ride this summer without having to deal with a rough idle.
