When I go over a certain speed my accelerator pedal starts to vibrate a little. 2009 Toyota Camry

When I go over a certain speed my accelerator pedal starts to vibrate a little.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hi there – if by "go over a certain speed" – you mean vehicle speed, the vibration could be a worn CV joint or worn motor mounts, allowing more engine vibration than should be expected. If you mean engine speed, there may be a worn serpentine belt tensioner, or loose belt, which is creating more vibration through the engine itself. It is also possible that the torque converter has an issue causing engine vibration. I recommend a vibration 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 cost estimate for repairs.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

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.
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.
If your Toyota Camry is experiencing a vibration at idle, there are several potential causes. The most common cause is an imbalance in the engine`s rotating assembly. This can be caused by worn or damaged bearings, pistons, or connecting rods. Another potential cause is a problem with the engine`s timing belt or chain.
Your vehicle`s engine and transmission send power to a differential and on to the wheels through a driveshaft. It rotates to transmit that power and torque, so a bend can cause major vibrations as you accelerate.
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.
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.
Under light acceleration your 2012-2014 Camry may shudder as the torque converter locks up. The torque converter is the assembly that passes power from the engine to the transmission.
Wheel Balance

When your car vibrates every time you drive at 50-70 mph, it is most likely that your wheels are out of balance. The vibrations will emanate from the steering wheel across the seat and through the vehicle`s floor.

The most common reasons for your car to excessively vibrate are a problem with your tyres, wheels, brakes, steering, suspension, axle or engine.
It sounds like you may have a wheel bearing that is dried up internally and no longer lubricated. This can cause a vibration to be felt in many parts of the vehicle. The best way to check for this is to have a certified mechanic test drive your vehicle to diagnose the vibration symptoms.
There are a few reasons your car may shake when accelerating but not coasting. The most common reason is that the engine is misfiring. When the engine misfires, it doesn`t run as smoothly as it should and can cause the car to shake. Another possible reason is that the spark plugs or ignition coils are dirty or damaged.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

When I go over a certain speed my accelerator pedal starts to vibrate a little. 2009 Toyota Camry
ANSWER : Hi there – if by "go over a certain speed" – you mean vehicle speed, the vibration could be a worn CV joint or worn motor mounts, allowing more engine vibration than should be expected. If you mean engine speed, there may be a worn serpentine belt tensioner, or loose belt, which is creating more vibration through the engine itself. It is also possible that the torque converter has an issue causing engine vibration. I recommend a vibration 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 cost estimate for repairs.

I have a 2002 toyota camry LE engine wich i want to use on a 2004 toyota camry XLE .is my 02 toyota camry engine compatible ?
ANSWER : Hi there. Assuming that both engines are the same size, the compatibility of "fitting" should be OK. However, since this is a service we don’t offer, we’re not best suited to provide the best advice on this. I can tell you that a common problem have with replacing motors is communication with the ECU. In most cases, it will require reprogramming by a specialist in order for all the systems to work correctly.

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.

Fuel pump engages. Batery good, alternator good volts, jump start helps when wont start. Temp does not matter. Intermittent?
ANSWER : Hello. Thank you for writing in. There are several reasons your vehicle may only start when jump starting. The first and most common is a build up of resistance that is causing you to need a boost of voltage to get the engine started. This may be due to poor battery cables, a bad ground connection, a poor starter solenoid, and a couple of other issues. The first thing you want to do is perform a visual inspection of the starting system. Make sure there is no corrosion build up in the battery cables. You can also check the resistance across these wires and make sure you have a solid connection between components. You then want to make sure the starter solenoid is doing its job. It is responsible for taking the small amount of electricity sent by the ignition and turning it into a huge electrical charge that is strong enough to push over the engine with the help of some gear ratios in its favor. Do some more testing, and stick to the basics before assuming its something seriously complicated.

Slight delay when stepping on accelerator pedal
ANSWER : Hello. This delay is common in what is known as drive by wire engines. This means that the throttle is controlled by sensors and an electric motor. Most of the time when there is a delay that is this serious, it is caused by a programming issue or by the throttle body failing or being dirty. I usually start by checking the throttle body and cleaning it if it is dirty. If cleaning it does not help, I reprogram the engine computer. If the problem persists after that, then the throttle body usually needs to be replaced. If you need to have this looked at, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your acceleration concern.

Foot pedal vibration at certain RPM’s?
ANSWER : The vibration still sounds like it could be coming from a worn engine or transmission mount. You may be able to do a simple check by engaging the parking brake and putting the vehicle in drive and blipping the throttle pedal while holding the foot brake, and the same in reverse. If you feel a clunk or a thud when you blip the throttle, you ma have a worn engine or transmission mount. Consider hiring an experienced technician like one from YourMechanic who can come out and perform this engine mount test for you as well as look over the vehicle to offer a more personal diagnosis of the vibration.

When I press the gas pedal the engine revs but the car doesn’t accelerate. Is this a throttle or transmission issue?
ANSWER : Hi there. From what you are saying it sounds like there is a failure in the throttle body. When the motor in the throttle body fails, the throttle plate will open and close causing the noise you are hearing. I usually monitor the movement of the throttle to see if this is what is occurring. I then scan the computer for codes to see what comes up. If there are not any codes then the sensors in the throttle body should be monitored to see what is going wrong. If you want to have this lack of throttle response checked, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair your throttle body issue.

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.