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Engine Won't Start: Check Engine Light Is The Key
Tire Pressure Monitoring Systems: Simple But Critical Maintenance
Used Car Buying: How To Spot A Lemon
GPS Navigation Systems: Choosing The Best GPS Tom Tom, Garmin, Magellan
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Engine Tune Up: A Thing Of The Past
Engine Parts: The Serpentine Belt
Accessories: Styled Wheels & Chrome Rims
Car Buying: Negotiate With Confidence
Replacing Fuel Filter: How To Change Your Vehicle Fuel Filter
Honest Dealerships: It Ain't Easy Being Sleazy
Buying Tips: Sail Away From The Sale
Frozen Door Locks: Unlocking Your Frozen Car
Accidents: Collisions And Dealing With The Damage
Loans With Bad Credit: Consider, Buy Here Pay Here Used Auto Lots
Detailing: Tips For A Better Detail
Starter Problems: How To Remove Your Car Starter
Extended Warranties: Ask, Who Holds The Warranty?
Winter Driving Safety: Prepare For Snow And Ice
Noises: Squeeks, Rattles And Crunches
Fix Radiator: How To Repair Leaking Car Radiators
Car Financing Scams: When To Walk
Fix Scratches: How To Repair Car Scratches
Replacing Car Keys: Prices Up Due To Anti Theft Systems
GPS, MP3 Stereos, DVD Players: Accessory Buying Tips
Bad Credit: Tips For The Auto Buyer With Bad Credit
Buying Questions: Can Dealers Sell Vehicles With 30% Life On The Brakes?
Aftermarket Parts vs. OEM Parts: What's The Difference
Auto Loan Refinancing: When To Refinance?
Air Conditioner: Check Your AC System Before Summer
Winter Care: Please Don't Pass The Salt
Service Shaking Problems: My Car Shakes When Braking
Posted by carsandtrucks on Tuesday, December 11 @ 05:45:55 EST

You are traveling at 60-mph hour when you enter the off ramp of the interstate. To be able to negotiate the off ramp you have to slow down and this requires some pretty heavy braking. As you apply the brake pedal, the steering wheel begins to shake violently and the brake pedal is pulsating against your foot. You may fear that the wheels are about to fall off your automobile, but the likely cause is your disc brake rotors are warped. The brake rotors are the discs referred to in disc brake systems. When you apply the pressure to

the brake pedal, hydraulic fluid forces the brake pads to grab the rotor/disc and slow the vehicle down. If the brake rotor has warped, this will cause a vibration that is transmitted from the rotors throughout the vehicle causing the steering wheel to shake. The greater the runout of the warped rotor, the more violent the vibration. So what caused the rotors to warp in the first place? Most often the rotors warped due to the heat generated by the braking process. It takes a lot of friction to stop a 5000 lb. pickup truck traveling at 60mph and the heat generated can easily exceed 500 degrees. Over time the brake rotor surface distorts (warps) from the heat. Another cause of brake rotors warping is over torque of the lug nuts. This happens when someone installs the lug nuts using a pneumatic wrench. If you recently had some sort of tire service and the brake pulsation started right after that, it is possible the lug nuts were over tightened. Now that you know what the problem is, what do you do to fix it? There are two choices. You can replace the brake rotors with new ones. On average you can expect to spend between $60.00 and $80.00 per rotor. If you have tackled brake work on your own, you should be able to handle this task yourself. But remember, we are talking brakes here, so if you aren't sure of yourself have a professional service technician do it. The second choice is to have the rotors "trued." This means the rotors will be turned on a brake lathe and the warped portion of the rotor will be cut out. This process requires special equipment and should only be completed by a competent machine shop or service center.

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