Jerking/Vibrations

I have a 2012 VW Jetta and just recently, started experiencing some problems with it. Within the last month, I have had the battery, alternator, and both fans replaced. The battery was replaced as I believe it had reached its natural cycle (I had the previous one since I first bought the car new in 2012). The alternator and fans were replaced after I ran through some water a few weeks back. When I went to the VW dealership, they mentioned that the water may not have solely caused the failures of both the alternator and fans, but perhaps was a catalyst for both of them to fail. As of recently,
Experienced mechanics share their insights in answering this question :
Hello, thank you for writing in. This is going to be a process of elimination. You want to start with the simplest fixes which include balancing, aligning, and properly inflating the tires. From there, or during that process of removing and balancing the tires, check the suspension for any obvious signs of damage. If you have access to view the steering components, check for leaks or damages there as well. Control arms should be checked, and then you can work your way towards to braking system. You will want to make sure the brakes are not sticking, and that the rotors are not out of round. At this point, if you have not found anything wrong and the issues is not resolved, contact a professional. A YourMechanic.com technician can be scheduled through our service department.

How to Identify and Fix Common car Problems ?

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An indication that a vehicle is not receiving the right mixture of air and fuel is if the vehicle jerks or surges forward at high speed. Several components of the fuel or air intake system could cause this jerking or surging sensation to happen. Issues within these systems can also cause fuel economy to worsen.
Top Reasons Why Cars Vibrate

You haven`t had your tires aligned or balanced, so they`re not able to drive straight; also uneven tread wear can cause vibration, too. Components of the suspension or steering system need to be fixed or replaced, such as the shocks or ball joint for example.

The most common reasons a Volkswagen Jetta shakes when braking are bad brake rotors, bad brake pads, or a bad wheel bearing.
Along with faulty spark plugs, a build-up of dirt and grime is the likely cause of cars stuttering when idle. A clogged filter or fuel injection system can starve your engine of fuel or oxygen, causing your car to judder and shake.
Defective Mass Airflow Sensor

Having a defective mass airflow sensor could certainly cause your car to jerk or even lung forward while accelerating. The mass airflow sensor helps measures the amount of air that your car engine takes in.

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.
Vibration could be caused by an issue with the brake pads. They might be contaminated, warped, or damaged. Fortunately, brake pad replacement is a relatively quick and inexpensive service. The rotors are another possible cause.
Brake pulsation usually only has one cause, which is warped rotors/brake discs. The main cause of warped rotors is excessive hard braking or fast stops which can severely overheat the discs.
If you notice that your car jerks while you`re accelerating, this is an issue that you shouldn`t ignore. A jerking car is often a sign that your car will develop other problems if you don`t address this issue. Dirty fuel injectors are among the most common reasons for why an accelerator becomes jerky.
When the transmission jerks between gears or the transmission is shifting hard, it should be taken as a warning that your transmission needs repair. When a transmission is shifting hard or slipping it`s time for an inspection.
A Transmission Fault

Shifting issues can sometimes cause your vehicle to feel like it is jerking when accelerating. If you have internal transmission damage, it can cause the gears to slip [and] engage over and over again, which feels like jerking when accelerating.

Spark plugs that are worn out will cause the engine to misfire. This means that your spark plugs are not igniting the fuel in each piston cylinder in a timely manner, causing your car to jerk around while accelerating.
If you`re driving at freeway speeds and notice your engine sputter or jerk, you may have a failing fuel pump. This problem is caused when the fuel pump can`t deliver a smooth flow of fuel to the engine; periodically, your engine receives only air when it was expecting to receive fuel.
Vibration can be caused by one or more factors at any given time, the most common being imbalance, misalignment, wear and looseness. Imbalance – A “heavy spot” in a rotating component will cause vibration when the unbalanced weight rotates around the machine`s axis, creating a centrifugal force.
Vibration is transmitted into your hands and arms when using hand held / operated tools and machinery. Excessive exposure can affect the nerves, blood vessels, muscles and joints of the hand, wrist and arm causing Hand-Arm Vibration Syndrome (HAVS).
Gearbox vibrations are often caused by damaged or worn out gear teeth. When gear tooth engagement involves a damaged tooth, the force cannot be transferred as with the other gear tooth engagements. If a gear tooth is broken, less force can be transferred at this point of the cycle. Vibrations occur as a result.
The main sources of vibration are the high-pressure fuel-pump, and the injectors.
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 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.
Your brake judder could be caused by an incorrectly fitted brake disc or one that has moved out of alignment over time. Misalignment between the brake disc and the wheel hub or brake calliper can cause juddering.
The brake disc developing disc thickness variation (DTV) over time, is the most common cause of judder. Disc thickness variation is when the disc has worn unevenly, causing the two friction surfaces of the disc to no longer be parallel with each other. This is often confused with disc warping.
Faulty brake calipers also can cause pedal pulsation and they can cause rotor wear that doesn`t necessarily show up in the brake pedal.
If the brake rotors are out of balance or warped, the vehicle can jerk to a stop or rapidly vibrate depending on your driving conditions. If the brake pads are worn or filled with dirt and debris, the area of the rotor under the brake pads can collect these substances, causing the car to pulsate when braking.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

severe steering wheel vibration at speeds above 60 mph, but not below 60, and severe vibration during braking.
ANSWER : If you can wiggle the tire side to side then you either have a problem with inner or outer tie rod ends. You may have both of them that are bad. This will allow the side-to-side movement, but brake rotors that are warped is the fault that may be responsible for the wobbling. You should have the tie rod inner and outer joints checked and replaced. Also check the rack and pinion bushings to make sure they are properly in place. If you need help with any of this, a certified mechanic, such as one from YourMechanic can come to your car’s location to inspect your vehicle’s vibration issue.

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My car started idleing rough, vibrations soon as start car, vibrations soon as I accelerate, vibrations, rough idle bad
ANSWER : This sound like you may be having an engine misfire. Have the system checked and scanned to see if codes are present for an engine misfire. If it is, then a mechanic can check to see if a coil or spark plug has failed. You may have oil leaks in the valve cover seals that has caused the ignition to short out in the spark plug holes. A repair of your valve cover gaskets may be necessary, along with the other components that I’ve mentioned. I’d recommend having the vehicle looked at by a qualified technician who will be able to diagnose these misfiring symptoms and fix it accordingly.

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Engine vibrates alot…….whole car vibrates
ANSWER : Hi there. This is a mount problem. It is very common for the engine mounts to fail on a Mazda Premacy and still visually look good. I always remove them to physically check them for damage and wear. It can also be a harmonic balancer issue as I have seen these start to come loose and cause this. If you want to have this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the shaking you’re experiencing.

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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.

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There is a shudder on take off and vibration while accelerating – 2013 Ford Focus
ANSWER : Hello there. Many possible faults can cause your 2013 Ford Focus to vibrate upon acceleration. From your description, it sounds like you are describing an engine misfire. Misfires can be caused by many issues, but the most common are spark plugs, coil, fuel pump, fuel injectors, MAF sensor, vacuum leaks, or a wiring harness fault.

A qualified technician, such as one from YourMechanic, will be able to diagnose your misfiring condition and make any repairs to get your vehicle running normally again.

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My 99 bmw 328i has a jerk, it was jerking really bad before my fiance changed the sparks and did an oil change. I
ANSWER : The windows can be repaired if you request a window regulator/track inspection. For door lock issues, please request door locking system diagnostic/repair. The engine operating condition problem you are having should be diagnosed as a possible misfire although the mechanic would consider a fuller slate of possibilities in order to get to a resolution (i.e., pinpoint the fault). For example, you could have an issue with one or more ignition coils, a sticky fuel injector, the throttle position sensor, a vacuum leak, faulty oxygen sensor, and so forth. If you request the misfire diagnostic, the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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I have an engine vibration that starts when I am in idle.
ANSWER : The engine vibration will need to be checked to see if it is worse in drive than it is in reverse. If the vibration is less apparent in reverse, then the motor mounts will need to be neutralized to center the motor mounts. If the vibration is even when the engine is in neutral, then the engine crankshaft damper is bad and causing the engine vibration. I recommend having a certified mechanic, such as one from YourMechanic, check to see if the motor mounts or the engine damper is at fault. They will be able to diagnose your engine vibration and ensure that the correct repairs are made on your vehicle.

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Vehicle vibrates while accelerating and stops when you take your leg off the pedal or accelerate more
ANSWER : I suspect you have a problem in a CV joint, or if you have the all wheel drive version; in a drive shaft. The joints that enable the shafts to move around can wear out and when they do, they can produce a vibration at "resonate" speeds. There might be a vibration at 40 MPH that smooths out at 50 and then returns at 60. Or any other odd sounding pattern. You can have that conveniently checked out by contacting Your Mechanic. They can send a technician to your home or office who can check out your Toyota’s vibration and give you a more exact idea of what is the problem and what it will take to fix it.

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