Skip the auto shop - Our mechanics make house calls

Q: My car vibrate when I switch on the AC/ I changed e mount plus e spark plug but still vibrate a lot. Please help

asked by on

The car vibrate whenever I switch on the AC I changed the mount and the spark plugs but still vibrate whenever it idle and the AC is on. Please what's the problem

My car has 90000 miles.
My car has an automatic transmission.

Hello. There are several components that will lead to the vehicle vibrating when the A/C is on. With the motor mounts and spark plugs eliminated from the list, you should check into the operation of the air conditioning. The first place to check is the part that is related to engine speed, since it seems to play a factor. This is the compressor pulley and it may be loose or failing. Is the air conditioning system fully charged and pressurized? This may also be playing a factor and possibly amplifying the problem. If the compressor is failing, then it may be adding excess strain to the engine. There needs to be some further testing on the air conditioning system to make sure it is working correctly and not stressing out the engine.

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
  1. Home
  2. Questions
  3. My car vibrate when I switch on the AC/ I changed e mount plus e spark plug but still vibrate a lot. Please help

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: When I go above 50 mph my truck starts to shake.

This is likely a tire "out of balance" issue. Most vehicles have a certain speed where an out-of-balance condition from a rotating component (wheel, driveshaft, etc.) will resonate, or "echo" the out of balance condition - causing vibration, and even...

Q: Engine seized...rods shot out both sides of engine block.

Hello. To answer your question, yes, the lack of an air filter can cause catastrophic engine damage. Over time, the debris will build up inside of the engine as it mixes with air and other carbon contaminates. Eventually, it will...

Q: 2000 Jeep Gran Cherokee 4.0. If low and high AC pressure switches are grounding out, and clutch won't engage, does that mean compr

Hello Jim, thank you for writing in. To determine what the issue is, you need to start by checking the clutch coil for full battery power (12 volts ideally). If it is, then you know clutch should engage when prompted,...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...