My car is shaking

I brought my car 1 month ago, the last owner have the same problem, the car shakes when I turned it on and when I put it into drive after 1500 rpm start to shake everything and even below 1500 rpm it shakes, you can feel it in the steering wheel and in the seats, the hood shakes too, even when I put it in park shakes a lot, the last owner say he change the engine and it has around 90k miles on it but the odometer read 209235, I read it might be the drive shaft or balance of the wheels, I took it to the mechanic and they say they don't know why it can happen

My car has 209235 miles.
M

Experienced mechanics share their insights in answering this question :
If the shaking is occurring with the car stationary, that would not involve the wheels or driveshaft, although it could implicate the torque converter. A shaking engine diagnostic would start with the motor mounts. If those are judged solid (there are tests), one should assess the mechanical condition of the engine by checking cylinder compression.

The reason for that is if cylinder compression varies too much, that variance alone can account for this symptom. If the cylinder compression is too low or varies too much from high reading cylinder to low reading cylinder, one would then try to rule out easily repairable items like a mispositioned timing belt or chain. Of course, if compression issues are traced to valve train problems, the heads have to be serviced.

Other potential causes of the vibration are a broken harmonic balancer, engine ignition timing being off, and flexplate and/or torque converter damage or imbalance. Prior to getting involved with diagnosing an imbalance in something as hidden as the torque converter, though, the engine should be put on a scope to determine if there is something going on in individual cylinder firing conditions that would account for the vibration. Varying power output from individual cylinders, due to possible fuel and ignition system problems, obviously will cause vibration: you could have a bad coil, plug, injector, and so forth. A scope makes that diagnostic easy.

I recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine why the engine is shaking and suggest any necessary repairs.

How to Identify and Fix Common car Problems ?

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Other potential causes of the vibration are a broken harmonic balancer, engine ignition timing being off, and flexplate and/or torque converter damage or imbalance.
The most common reasons a Ford Mustang shakes when braking are bad brake rotors, bad brake pads, or a bad wheel bearing. Search our network of RepairPal Certified shops near you to speak with a technician about your issue. A broken retaining bracket for parking brake cable can cause a scraping noise…
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.
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.
Worn or dirty spark plugs can cause a petrol car`s engine to misfire in one or more cylinders, which can cause vibrations when the car is idling or at running speeds. The easiest solution is to replace your spark plugs and check the related wiring. Engine vibrations can also be due to the air and fuel systems.
A loose or disconnected air hose or vacuum hose can cause quite a bit of violent shaking and vibration in your car`s engine. To correct the problem, simply look for any loose or disconnected hoses and reattach them and replace them as needed.
Rough idling is not a normal function of a vehicle. If your vehicle experiences unusual vibrations, shaking, or poor idling, take your vehicle to a trusted technician for an inspection and repair at Sun Devil Auto.
The most likely cause of the shuddering most often happens in the vicinity of your car`s rims and tires. They plant your car to the road, and if anything is broken, will feel it. On a serious note, it may be a broken transmission mount or a broken caliper.
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.
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.
Typically it`s from a damaged inner CV joint. These are located on the end of each axle. They both have an inner and outer joint that could be damaged and shake when you press the gas pedal. Another cause could be a broken motor mount.
Knocking and shaking coming from your engine can be the telltale sign of bad fuel injectors. Another symptom could be misfiring or a vibration.
Sometimes, body tremors are due to an underlying neurological condition, such as stroke, Parkinson`s Disease, or multiple sclerosis. However, they may also be a side effect of medications, anxiety, fatigue, or stimulant use. A doctor will work to determine the cause and provide appropriate treatments.
When the fluid in a transmission becomes dirty and contaminated, the particles in the fluid prevent it from building up enough pressure in the transmission lines. In turn, this will prevent proper pressure contact between transmission plates when they are applied. As a result, the transmission will begin to shudder.
The most common reason an F150 will shake is the wheels are out of alignment or you need to replace the joints. Especially if the shaking only occurs while driving. Other common issues include worn out motor mounts or faulty spark plugs.
The most likely cause of the shuddering most often happens in the vicinity of your car`s rims and tires. They plant your car to the road, and if anything is broken, will feel it. On a serious note, it may be a broken transmission mount or a broken caliper.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

My car is shaking – 2000 Ford Mustang
ANSWER : If the shaking is occurring with the car stationary, that would not involve the wheels or driveshaft, although it could implicate the torque converter. A shaking engine diagnostic would start with the motor mounts. If those are judged solid (there are tests), one should assess the mechanical condition of the engine by checking cylinder compression.

The reason for that is if cylinder compression varies too much, that variance alone can account for this symptom. If the cylinder compression is too low or varies too much from high reading cylinder to low reading cylinder, one would then try to rule out easily repairable items like a mispositioned timing belt or chain. Of course, if compression issues are traced to valve train problems, the heads have to be serviced.

Other potential causes of the vibration are a broken harmonic balancer, engine ignition timing being off, and flexplate and/or torque converter damage or imbalance. Prior to getting involved with diagnosing an imbalance in something as hidden as the torque converter, though, the engine should be put on a scope to determine if there is something going on in individual cylinder firing conditions that would account for the vibration. Varying power output from individual cylinders, due to possible fuel and ignition system problems, obviously will cause vibration: you could have a bad coil, plug, injector, and so forth. A scope makes that diagnostic easy.

I recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine why the engine is shaking and suggest any necessary repairs.

Read Full Q/A … : My car is shaking

car shakes when idle and accelerating
ANSWER : It is very possible that you have a valve cover gasket or spark plug tube seal leak on your vehicle. These type of leaks will allow oil to leak onto the spark plugs causing misfires. When the engine misfires due to oil getting on the spark plug, the engine oil will burn. Since oil and tires are both petroleum products, they will both smell similar when they are burning. I would recommend having an oil leak inspection performed by a qualified professional to determine if there is an oil leak. Consider YourMechanic as an Oil/Fluid leak inspection can be peformed at your home or office.

Read Full Q/A … : My car is shaking

I put the wrong key in my car and a few weeks later my car just shut down and it will not start I believe it’s the computer but…
ANSWER : Hi there. What had happened is the wrong key set the security to the vehicle. This is to prevent the vehicle from starting with the wrong keys. Try removing the battery cables (+) and (-) for 13 minutes. During that time, put the original key in the ignition and turn it on. Activate everything in the car even though there is no power. Then remove the key and hook up the battery cables. The computer should have reset and reset the security. If the security is still being tripped, then I recommend seeking out a professional, such as one from Your Mechanic, to help you

Read Full Q/A … : My car is shaking

Replaced alternator on car 2 times each time shows it’s charging 14v let car run for a little bit then test drive and car voltage
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Read Full Q/A … : My car is shaking

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ANSWER : Hello – your symptoms suggest that the head gasket(s) are blown on your engine, and coolant is leaking into the cylinders – hence the white smoke from the exhaust. Blown head gaskets can also cause misfire rough running, and low power levels. You don’t mention overheating, but an overheating event could be that cause of blown head gaskets, or just high mileage on this particular engine. I recommend a car is stalling inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and a cost estimate for repairs.

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After a radiator change, My car is shaking and emitting black smoke. What could be the cause? 2000 Volvo S80
ANSWER : Hello, your symptoms suggest a coolant temperature sensor failure, or wiring problem (cut wires or other "open circuit" issues). Changing the radiator may have caused the sensor to be bumped, or the wiring for this sensor to be damaged. An open circuit for this sensor would send engine management a signal for "very cold conditions", requesting a rich fuel mixture – resulting in rough idle, and black smoke from unburned fuel. I would suggest a engine sensor inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

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ANSWER : Hello. This can be caused by a number of things. Most of the time the issue is caused from a vacuum leak in the engine or a failure in the idle control valve. This is only true if the issue only happens at or near idle. I usually check these first and then check to make sure that the spark plugs are fine. If this occurs at higher speeds also then I will usually also test the fuel pressure to make sure that the fuel pump is not failing. If you want to have this running problem repaired, consider YourMechanic, as a certified mechanic can come to you to [diagnose why the engine is stalling] https://www.yourmechanic.com/services/car-is-stalling-inspection

Read Full Q/A … : My car is shaking

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 is shaking