My car shakes and shakes even more when i turn on my AC
My car has been shaking and when i turn on my AC it shakes even more. I would like to know why because i thought it was due to the spark plugs and the coil packs which i changed and it's still shaking. Sometimes the car would stop working and i have to turn it off and restart it in order to work.
My car has 110000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
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.
Have a certified technician look into the engine shake to isolate the exact cause.
How to Identify and Fix Common car Problems ?
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The mounts are put under a lot of stress when you switch on the AC. As a result, when the engine mounts or foundations wear out, vibrations and rattles occur when the air conditioner is turned on. If the engine mount is damaged, vibrations and sounds will become more noticeable.
Any unusual shaking or vibrating forces coming from the engine is cause for concern. It could be something as simple as old spark plugs producing an uneven power delivery, it could be something serious like worn or broken engine mounts, or it could be even more serious in the case of internal engine damage.
Tire issues: The most frequent causes of a vehicle shaking while driving stem from tire issues. Tires begin to behave differently when worn or out of balance. Tire replacement, realignment, and rebalancing are common solutions.
The vibrations in the air conditioner could be caused by a mechanical problem such as a fan motor or compressor not working properly and might need to be replaced, the blower wheel or motor fan blade could be out of balance.
Potential causes of a vehicle shaking at idle include a loose gas cap, loose battery cables, a worn throttle sensor, a damaged engine mount, or bad spark plugs. Perform a general inspection of your engine bay to look for damage. If you can`t repair the problem yourself, take the vehicle to a mechanic.
The most prevalent cause of vibration is problems with your wheels or tires. The potential problems include improper wheel and tire balance, uneven tire wear, separated tire tread, out of round tires, damaged wheels and even loose lug nuts.
A major reason of vibrations in a vehicle is poor quality of fuel. Poor quality fuel usually has low levels of octane, because of a lack in octane, the engine tends to experience more load.
The most common cause of the shaking most often happens near your tires and rims. The tires and wheels connect your vehicle to the road, and if anything is a bit wonky, will notice. It may be something like a broken transmission or a broken control arm.
There are a few parts within a vehicle`s engine that could cause a car to shake if they malfunction. These include the spark plugs and engine air filter. Check the spark plugs and their connections. As a general rule, spark plugs last for about 80,000-100,000 miles, depending on the make and model of your vehicle.
Elevated Pressure
The A/C compressor creates significant engine strain, and should this pressure reach a level higher than 400 PSI; the result could be vehicular vibrations. Should the pressure continue rising, multiple engine components will wear out prematurely.
Since HVAC systems involve plenty of moving components, it is normal to have some vibration and noise, even in a correctly installed and well-maintained system. However, excessive vibration and noise indicate that an installation should be serviced, and they can also lead to other performance issues.
Improperly functioning spark plugs cause an uneven burn of fuel in the engine, resulting in fluctuating RPMs and a louder noise. You might also experience increased vibrations of your vehicle while sitting idle or while traveling at low speeds. These vibrations originate from the engine and can shake the entire car.
The most common reasons for your car to excessively vibrate are a problem with your tyres, wheels, brakes, steering, suspension, axle or engine.
If you begin to feel persistent shaking in your car, it`s best that you get to the problem right away before continuing to drive. Continuing to drive with the shaking can result in further damaging parts, ruining your tires, and other costly problems that could be avoided by a quick trip to your mechanic.
Regardless, it`s a good idea to get your car checked out in this instance. Shaking: If your car shakes while it idles, you might need an oil change. This is because your car`s engine will create more friction without enough oil.
Your car shaking on idle is a pretty common occurrence, especially when you are at a stoplight waiting to drive off. Your car`s transmission gears, rotating crankshaft, as well as other inner working components, can cause vibrations that will be felt in the cabin of the vehicle.
In many vehicles a common cause of engine vibration is worn out or faulty sparkplugs. Worn out or dirty sparkplugs will cause the car`s engine to misfire or not properly fire on each and every cylinder. When this occurs, it is commonly referred to as the engine missing or not firing on all cylinders.
In order to reduce vibration and improve the dynamic performance of the shafting, a flexible coupling is used to connect the engine crankshaft with the generator input shaft, which is composed of a spring and a damper in parallel.
The commonest reason your steering wheel is shaking is because of the alignment of your tires. If your Corolla`s or Camry`s tires is unbalanced, the wheels of your vehicle can make your steering wheel vibrate – and sometimes the whole car.
To help confirm that the vehicle has an engine speed related vibration, with the vehicle stopped, put it into park or neutral and raise the engine speed to the RPM at which the vibration occurred to see if the vibration can be reproduced. If reproduced, diagnosis should begin with engine speed related components.
If your compressor is still under warranty, replace only the compressor. Assuming the compressor is no longer under warranty, we recommend replacing the outside unit if one or more of the circumstances also applies: Money is really short right now and you`re not sure it`ll be better anytime soon.
So if you turn on your AC and hear a rattle, it may mean you have a failing or bad: AC compressor. Rattling or your car air conditioner making loud humming noises which get worse as you accelerate can both be signs you need to replace your AC compressor.
Compressors generally last the lifetime of a car, or approximately 12 to 15+ years depending on how well the car is looked after. In saying that, it`s important that you regularly check up on and service your car to prevent premature failure.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
When I turn on my AC the radiator fans do not turn on. The fans do come on when the car warms up so I know they are working and the fuses are good. The AC compressor does come on and the air blows ice cold when the car is moving. Car is a 2006 Chrysler Sebring Sedan 2.7l v6.
ANSWER : The control circuit for the fans needs to be checked. For example, there is usually a condenser fan relay in the A/C electrical controls. There could be a fault with that relay and/or wiring problems, perhaps even just a loose connection, blown or loose fuse, and so forth. To resolve something like this, the recommended service is an electrical component diagnostic. If you request that diagnostic service, the responding certified mechanic will get the problem pinpointed and resolved. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
Read Full Q/A … : My car shakes and shakes even more when i turn on my AC
My car shakes and shakes even more when i turn on my AC
ANSWER : 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.
Have a certified technician look into the engine shake to isolate the exact cause.
Read Full Q/A … : My car shakes and shakes even more when i turn on my AC
Car won’t turn over. No lights come on when I turn it. Can’t even lock my doorsvor push the seat up or back.
ANSWER : Your probably correct, it sounds as though your battery is done. But it also sounds like you have charging system issues. I’m not sure that fixing your battery and charging system will solve the problem with the car shutting off, but it’s possible that it will and it’s a darned good place to start. By contacting Your Mechanic, you can have a technician come to your home or office to check out your car and help you figure out what to do next.
Read Full Q/A … : My car shakes and shakes even more when i turn on my AC
As I’m driving, all my lights inside/out of the car turn off and the car still stays on. But when I turn the car off it won’t turn over
ANSWER : Hello there. The charging system on the car may not be charging the battery as you drive and the systems that keep the engine running are priority so the engine will stay running until the voltage drops below about 9 volts but the lighting and some other accessories may cut off above this voltage first. You should have the charging system tested to see if the alternator needs to be replaced.
Read Full Q/A … : My car shakes and shakes even more when i turn on my AC
when I turn my ac on my cars idle drop and stalls out and the ac is hot
ANSWER : Hello, thank you for writing in. Although the pulley is still spinning, the compressor has likely failed. If it is not properly regulating pressure in the system, one of the first signs is a warm air conditioner. Considering yours is not cooling off, the pressures are not correct. If you believe the compressor is working correctly, you may want to check for a clogged line before replacing it. Keep in mind, a blocked line has likely put extra strain on the compressor, and may cause premature failure. For more help with testing or replacing the compressor, contact our service department to schedule an appointment.
Read Full Q/A … : My car shakes and shakes even more when i turn on my AC
2011 chevy impala makes clicking sound when i turn on the AC. Clicking will continue even after car is turned off, and does not st
ANSWER : Hi, what you’re describing is a fairly common issue with Chevrolet and GM products. It’s most likely the actuator motor for the blend door in the A/C ducts behind the dashboard, especially if the noise seems to originate from somewhere behind the dashboard.
The connectors for the actuator tend to corrode and cause resistance that results in a bad signal to the control for the actuator. The control then continues to drive the motor, which can result in broken teeth in the actuator/blend door’s plastic gears.
There are probably two actuators, one behind the glovebox and one on the driver’s side. If it’s not the actuators themselves, it could be a relay, but the service history of Chevrolets suggests the actuators.
If you need assistance with this, feel free to schedule an appointment with YourMechanic to diagnose the noise you’re hearing firsthand and replace your Impala’s A/C actuators and blend doors as necessary.
Read Full Q/A … : My car shakes and shakes even more when i turn on my AC
My car vibrates when I’m waiting at the light . It drives fine . And it vibrates more when I turn on the ac? Can itvtve motor moun
ANSWER : There are two principal possibilities: faulty motor/transaxle mounts, or an engine operating or mechanical condition including the possibility of a faulty harmonic balancer. To obtain a conclusive diagnostic, please simply request an engine vibration diagnostic and a certified Mechanic, dispatched by YourMechanic right to your location, will get this resolved. If you do need new motor/transaxle mounts, genuine OEM Nissan mounts are recommended in order to maximize the chances of resolving the problem. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
Read Full Q/A … : My car shakes and shakes even more when i turn on my AC
Engine turned off but inside of car still on, now engine won’t turn back on.
ANSWER : Hi there. The symptoms you’re describing with your boyfriend’s 2002 Grand Cherokee appear to be related to a broken or worn out ignition switch or relay. The ignition switch on the inside of the steering column is attached to multiple electronic connections that send signals to a relay box; which in turn, sends the signal to the individual components. The issue could be related to the ignition switch, the relay, or any of the components in between. If you want to have the fault pinpointed in person, I would have this starting issue inspected by a trained professional to ensure that the correct repair is made.
Read Full Q/A … : My car shakes and shakes even more when i turn on my AC
