Is it bad to turn the AC on while driving?
TOM: We’ve heard this myth before, about not turning on the air conditioner at highway speeds. The purveyors of this myth explain that, with the car going that fast, the belt is turning at high speed. And if you then switch on the AC, it will be “jolted” into action at a very high speed, and this will harm it.
Why shouldn’t you leave your AC on in your car?
It will draw negative charge from your muffler causing you to fail your next smog check. So always turn your AC dial off when powering down your vehicle.
Does AutoZone check your AC for free?
If you want to find the right AC solution for your car, you can either shop online or go to your local AutoZone. You can get your car’s parts tested for free at AutoZone.
Why did my car AC suddenly stop working?
Some of the most common auto ac repair questions that are asked are why the car’s air conditioner stops blowing air, why it stops blowing cold air, or why the AC is blowing hot air. In order to understand more about why your car’s air conditioner stops working, its important to identify the most frequent issues and why they happen.
What to do when your car AC is running?
Check the radiator fans to make sure at least one fan turns one when the AC is switched on. However, some cars operate both fans at low speed while driving and switch into high speed mode when the AC is running. So get tricked into thinking your fans are ok simply because they’re running.
How can I tell if my car has a bad air conditioner?
The best setting for diagnosis is “fresh air” (not recirculated) with the air blowing out of the center vents in the dash and the AC turned on. Start with the fan speed turned to its highest setting. If your car has a “Max AC” setting, select that option. Listen for unusual noises coming from the AC.
Why does my car AC blow cold air then blow warm air?
But that cold air turns warm fairly soon after because the high side pressures build to the point that the high pressure switch shuts off the compressor clutch. Once pressures equalize, the high pressure switch allows the compressor to start up again. The cycle repeats over and over, providing a short period of cold air, followed by warm air.