Skip the auto shop - Our mechanics make house calls

Q: When my AC is on and while stopping it rattles and shakes

asked by on

When my car is stopping and AC is on, it rattles and shakes. At first I thought it was a motor mount and got one of motor mounts replaced. But now it seems if it is getting worse than better

My car has 184000 miles.
My car has an automatic transmission.

Hi there.

In many cases a faulty air conditioning compressor will cause excessive drain to be put on the engine and cause the symptoms you’re describing. The best way to diagnose this is to complete a pressure check of the AC system. If you have the right equipment, complete this test sooner rather than later; as it can create additional damage to the engine if not repaired. If not, contact a local mechanic who can come to your home or office to diagnose your A/C system and replace your A/C compressor if necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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

Q: So I just bought a 2014 4cyl Dodge Avenger and the transmission slips after long trips say over 20 miles. I checked the fluid and

Hi there. As the temperature increases inside the transmission, the fluid will expand; which is why the fluid level on the dipstick is higher when you check it. The goal is to follow the manufacturer's recommendation on amounts of fluid;...

Q: Cracked Windshield repair

You will need to have the crack checked by a professional glass company to inspect it and replace the windshield if they cannot repair it. Most small spider cracks can be repaired if they are less than the size of...

Q: Traction control

A lean fuel condition may be caused by a number of things. An intake air leak, a dirty or faulty mass air flow sensor, a faulty fuel injector, a faulty oxygen sensor, a faulty fuel pump are just a few...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...