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You have one or more tires out of balance.

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15y ago
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Q: Why does my car vibrate and make bad knocking sound over 90 km an hour?
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Related questions

Do earthquake make sounds?

Yes, they do. They make a rumbling sound as they vibrate.


What must happen in order for sound waves to form?

Something must vibrate, to make the air (or whatever else the sound travels through) vibrate.


How does tubular bells make sound?

Sound is vibration (of air ... as we humans perceive it). If a bell, tubular or otherwise, is made to vibrate then it will cause the adjacent air to vibrate ... and we call it sound.


Molecules vibrate do they make a sound?

Not in the range of human hearing.


How does a violin give a sound?

The bow makes the strings vibrate, causing the string to make sound.


What happens to a sound wave if there are no particles to vibrate?

the sound wave will not make it to the ear drums. you wont hear the sound.


How does a trumpet vibrate and make its sound?

its your lips. Because you blow into it and it can be air!!


How many ways can you get objects to make sound?

Only one way: you make them vibrate.


What if a violin is made flat?

I don't think it would make a sound. it needs the full body to vibrate to make sound.


Mazda rf diesil has knocking sound why?

extreme cold temperatures might cause Mazda rf diesil to make knocking sound , however; it is recommended that you get it checked from the mechanic.


What would make a knocking sound in a 1987 Nissan 5 speed transmission?

A seized gear can cause a knocking sound on a 1987 Nissan 5 speed transmission. A blown gasket can also cause this sound.


Why does a car make a knocking sound when it turns left?

Bad ball joint