14 votes
Accepted

Vibration at speeds between 40-47mph

Hitting a bump at speed can cause several problems: Tire or wheel damage: generally this requires a replacement tire or wheel Suspension damage: a suspension member could have been bent or damaged by ...
GdD's user avatar
  • 16.4k
11 votes

Why do bad motor mounts cause the car to shake and vibrate at idle, but not when you give it gas and increase the rpms?

In some cases (not all), when the engine torques over it takes up the slack which is there when the engine is idling. Since the slack is taken up, the engine becomes smoother. If it truly is the motor ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
8 votes
Accepted

Steering wheel vibrations at highway speeds

Tires, or a front wheel has thrown a balancing weight would be my first assumption. Examine both front tires for uneven wear, "cupping" (scalloped depressions where tread gets shallow in evenly ...
SteveRacer's user avatar
  • 12.4k
6 votes

Why do bad motor mounts cause the car to shake and vibrate at idle, but not when you give it gas and increase the rpms?

At idle, you will be hitting the resonant frequency of the engine and transmission that are supported by the mounts. As the engine revs increase, the frequency of the moving parts in the engine will ...
HandyHowie's user avatar
  • 25.2k
5 votes
Accepted

2009 Ford Focus SE, Vibration returning after replacing Engine Mount

There is a TSB on this issue and a shield to preven rocks from interfering with mount.
Moab's user avatar
  • 8,010
5 votes

Pontiac G6 sounds like a prop plane. Wheel bearing?

Pretty urgent. Less urgent than say, having no friction material left on your brakes but way more urgent than any regular servicing. Driving around with a dying bearing will hurt both economy and ...
squigbobble's user avatar
5 votes
Accepted

Car shakes from 60 to 80 mph, not tires, wheels or alignment

A while ago I faced a similar issue. My problem was the tie rods. Quick interjection, you should replace them in pairs. Just like headlights, if one fails, the other is close behind it. Let's go down ...
Hari's user avatar
  • 781
5 votes
Accepted

Strange vibration noise in Subaru Forester

It's the fuel EVAP system running a self-test. Quoth the manual (page 8): Noise from under the vehicle NOTE You may hear a noise from under the vehicle approximately 5 to 10 hours after the engine is ...
motosubatsu's user avatar
5 votes

Excessive engine noise and vibration in cabin 09 toyota camry 2.4l

One possibility is that an engine mount has broken. The engine may now be resting against some of the bodywork or other components in the engine bay causing vibrations to be passed into the passenger ...
HandyHowie's user avatar
  • 25.2k
4 votes
Accepted

Why does my clutch "bounce"?

It's a standard side effect of the combination of: Not quite enough gas/rpm on the engine and Lifting the clutch to biting point a little bit too quickly and A little bit of play in the rest of the ...
Caius Jard's user avatar
  • 1,155
4 votes

There is vibration in car (2008 Honda CR-V). Getting new tires did not solve the problem

My father had the exact same problem that you describe on his 2007 Honda CR-V and it turned out to be a drive shaft. Apparently they fail quite regularly on this model. Replacing the shaft resolved ...
Steve Matthews's user avatar
4 votes

What is the Connection Between Failing Torque Converters and Vibration?

I'm not a TC guru, so I'll refer you to this question for the different failure modes. What I can provide is the engineering theory behind vibration. Any rotating mass will suffer from vibration if ...
Zaid's user avatar
  • 39.2k
4 votes
Accepted

Uneven front tyre wear & steering wobble

Are these low profile tires? if so balding around the inside and outside edges on these can be quite common especially if they are not kept at their max PSI. The PSI is my first guess. Typically if ...
Cc Dd's user avatar
  • 2,879
4 votes
Accepted

Why do some Engines vibrate less when the RPMs are slightly higher than when at idle

First two options are not true. By increasing the engine speed, you change (shorten) its vibration period. Car body is a receiver of vibration, produced by the engine, but has its fixed period. The ...
krzyski's user avatar
  • 156
4 votes

What is my next step in figuring out the root cause of a steering wheel shimmy

I think the obvious source of the "shimmy" is the rim itself. If the rim is not completely true (which the one you showed is not), it will most likely be felt at the steering wheel. This ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes

Warped disc rotors again?

To answer your question: Are there other explanations to a vibration in the steering wheel that changes proportionally with speed (and only occurs when braking)? Modern Rotors warping after ...
kmarsh's user avatar
  • 2,159
3 votes

Vehicle vibrates when driving past 120kmh, this is after doing a routine clutch change on a Opel Corsa 1.4i

It could be: new parts parts removed and replaced as part of the service work parts that may have been close to worn out that may have been stressed past their limits by the work Or it could even be ...
Rory Alsop's user avatar
  • 18.6k
3 votes

Is it normal for the car to vibrate on the BITE when no gas is given in a manual transmission?

This is perfectly normal and there is nothing wrong with the car. Think about what's happening. You're transitioning the car from an idling engine that's turning with no load on it, to one that's ...
Rob Pridham's user avatar
3 votes

Fixing vibrations caused by replacing springs?

With the moderate amount of lift you've described (1" to 1.5"), you shouldn't need a to drop your transfer case. Dropping the transfer case is done to straighten the angles on the front and rear ...
Paul Dufresne's user avatar
3 votes
Accepted

Vibration at idle, much worse after warm

Although, your point about cold engine mounts applies, I would doubt they heat up enough to significantly affect vibration transfer to the interior. Instead, what you might look at is increasing your ...
Alexus's user avatar
  • 550
3 votes

Can I replace my TR7 carb mounting rubbers with nylon?

Some thoughts on this: Are those the original mounts? If so, they are 30 to 40 years old, unless the TR7 isn't the car I think it is. Obviously they could be the 2nd or 3rd set, but, on the chance ...
dlu's user avatar
  • 14.5k
3 votes

Car shakes from 60 to 80 mph, not tires, wheels or alignment

Check that the new tyres are actually seated ok and that they are running ok too.. When I say running ok.. I mean rotate them off the ground and whilst rotating look firstly from the side of the ...
Orb's user avatar
  • 5,057
3 votes
Accepted

Drove over a semi-large rock and now vehicle vibrates in Park - Goes away in Drive

It's possible but unlikely that the engine mounts are the problem, at least they wouldn't be the only problem that needs to be addressed. An engine mount is a flexible cushion that connects the engine ...
GdD's user avatar
  • 16.4k
3 votes

vibrations in front end when slowing down from high speed

The most likely source is that the wheel bearings need adjusting. Otherwise it may be one or more suspension joints. A warped brake disc is a possibilty as well. The cause needs finding and ...
Solar Mike's user avatar
  • 34.7k
3 votes

Excessive vibration after new tire install

Thanks for all the responses. We found the problem. I ordered the rear tires for the car that were the correct size...I didn't realize that they had an incorrect sized tire on the vehicle when I ...
user62261's user avatar
3 votes

When to use threadlocker?

It depends on the vehicle but it's not uncommon to see threadlocker specified for assembly. Use threadlocker when it's called for. Today many modern vehicles use one-time-only fasteners instead of ...
jwh20's user avatar
  • 12.1k
2 votes

What could be causing my car to shake at high speeds?

Before all the checking balance, check the "other" out of round. My one in a million 1972 gem of a Pontiac (< $1000 TOTAL parts and maintenance spent last 20 years, and paid, any DIY free work ...
Brazilian Gold Luxury LeMans's user avatar
2 votes
Accepted

Pontiac G6 sounds like a prop plane. Wheel bearing?

This is the part that lets the wheel go round. It is very urgent that you repair it. The bearing can seize and cause your car to swerve at whatever speed you are going and hit something/somebody. I ...
race fever's user avatar
  • 3,363
2 votes

Why does my engine vibrate at idle only when I have the AC on?

The engine has no power at idle, it would be same as if you switch in gear and slowly release a clutch. Automatic idle control will try to keep it running, and it will vibrate. Some tiny 1L cars with ...
Arturs Bolsunovskis's user avatar

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