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Start by checking the rotors. If one or more rotors are warped you will exerience what is called "chatter". The only way to solve that problem is to have the rotors "turned" or replaced. It's usually caused by heat. Sounds like a wharped brake disc to me, you can take them off and get them checked at an engineering shop but probably lot cheaper just to stick new set on.

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โˆ™ 2006-04-05 14:59:08
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Q: 2002 Cavalier upon braking at high speed 40-50 mph why would the car shake but at low speeds 20-30 mph when braking be fine?
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Related questions

How do you fix the vibration at high speed and its steering wheel shake when braking just at high speed?

This can be a warped rotor or tire out of balance. If it only happens when braking it is a warped rotor.

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wheels need balancing, sometimes shake is only evident at high speed

When training to drive a truck, do you have to do high speed braking from 100 mph or more?

Most trucking companies do not require you to do high speed braking for speeds of the extent. Normally when you are driving a truck, your speed shouldn't exceed 70 MPH due to speed limits. They will teach you high speed braking though to prepare you for a worse case scenario.

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It depends on the vehicle but usually they will function normally at any speed.

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Why does steering wheel shake while braking at speeds of 30 mph and higher and car is slower getting up to speed and high pitched whistle can be heard but only in back seat?

I have a similar problem. I found this link which contains some likely solutions:

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the average speed is the speed you calculated when you have different speeds at different points or distances. It is different from speed because average speed has many speeds averaged into one speed ..while speed is specifically only one. Speed is instantaneous speed, whereas average speed is the average of the instantaneous speeds over an interval (time).

Why a car vibrate at high speed and its steering wheel shake when braking just at high speed?

High speed vibration is often an indication of a wheel that is out of balance or a bent rim. It can also be a bent driveshaft or bad U-joint. Vibration when you brake at high speed is almost always a warped rotor on the disk brakes.

Does Speed Affect Braking Distance Of A Vehicle?


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Yes. Light has a speed, electric impulses from the retina to the brain have speeds and the neurons in the brain have speeds.

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speeds lower than the speed of sound is known as the subsonic speed. speeds greater than the speed of sound is supersonic (mach 1) and speeds that are many times above the speed of sound (above mach 0) are known as hypersonic sounds.

Is variable Speed a motion?

It is not necessarily a motion in itself... Variable speed refers to something that can change speeds, or that the speeds can be changed. There are many things that can be variable speed.

Where is the Speed Sensor for a 1999 Chevy Cavalier?

The speed sensor for a 1999 Chevrolet Cavalier is located on the side of the transmission. It has two wires coming out of it.

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At low speed: Damaged or failed tire, bent wheel, damaged brake, damaged axle. Dangerous failure of a wheel bearing. At high speed generally a wheel balanace problem. While braking a bent or warped brake component.

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Answer A travel with a speed which is more then the speed of sound. Answer In aerodynamics, hypersonic speeds are speeds that are highly supersonic. The term has generally been assumed to refer to speeds of Mach 5 (5 times the speed of sound) and above.

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