Why does my car shake when I turn the a/c on? 2005 l4-2.2...

Q: Why does my car shake when I turn the a/c on?

asked by on July 22, 2017

Car shake when ac is turn on, the car stopped working when coming to a red light

My car has 94000 miles.
My car has an automatic transmission.

Hi there. Shaking with the A/C on can be caused by a number of reasons. The a/c compressor puts a lot of strain on the engine because the compressor is similar to being a small engine itself. When the a/c is switched on, the engine control unit should trigger components such as the idle speed/air control motor, to increase the idle slightly to compensate for the extra drag of the compressor. If that does not happen, then the additional drag can cause a low,shaky idle and even cause the engine to stall. Stalling can happen more often with the a/c on and turning the steering wheel as the power steering pump also creates drag on the engine. Excessive shaking can also be attributed to weak/broken motor mounts as well. It’s probably a good idea to have a professional mechanic complete a vehicle shaking inspection to determine why you are having these problems.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

What is a chevy hhr Lt 2006 2.2 or 2.4

The transmission used in the 2.2 L version of your car is not interchangeable with a transmission from the 2.4 L version. To determine whether you have a 2.2 L engine or a 2.4 L engine, please look at the...

What does the Brake Fluid Low message mean?

The Brake Fluid Low message can appear on your driver information center (DIC). When the DIC displays this alert, then your vehicle has detected that the fluid in your brake system is low. The brake system should be serviced as...

Check engine light came on, diagnostic was done and came up with codes saying pressure control solenoid 2,3, & 5 are shut off.

Low transmission fluid is a major cause of transmission failures. Your pressure control solenoids turned off to try to prevent damage to transmission components like clutches etc. Unfortunately, the damage is done and changing the fluid will not help, and...

Related articles

Top Automotive News & Stories: October 1-7
BMW i5 images leak, an ultra-lux Jeep, hydrogen-fueled Colorado ZH2, Fisker's electric future, record plug-in sales, NHTSA Road to Zero, and more.
How to Buy a Classic Chevy
For experienced car collectors and rookies alike, owning a classic Chevy is a rite of passage. There are multiple decades and styles in which Chevrolet made popular cars. Many of these cars then had a devout following in the years...
The Best Used Cars to Buy If Safety is #1
Maybe Maybe you’re a parent buying the first car for your teenager, or perhaps you’re a new parent and the safety of your little one is of the utmost importance. Or perhaps you're a safety-minded individual looking to make a...