I have a 2000 Discovery II with 162 K miles. My ? is what would be causing extreme shaking when I'm breaking. Usually the faster I'm driving the more shaking.

 

search this forum for "Death Wobble", an oscillation induced by one or more front end components. It is NOT the steering damper, it may help cover it up, but is not the fix. Will fill your Depends on a down hill sharp exit ramp from expressway.... usually quite a bit more than just warped rotors.

 

can you elaborate more on it? could be lots of things, well need more to guestimate with. does the brake pedal shake, steering wheel, whole car etc. does it get worse with pedal pressure? does the car pull to any direction? is the ebrake full down etc. take a look at the rotors, do you see any damage, cracks, or excessive wear/break dust, mud, oil etc. tire condition, miliage since last break job, front end components all connected or have broken or lose bolts... yadda yadda

 

The steering wheels is the only part that is shaking , the pedal does not shake nor does the car.

 

I always equate the word "extreme" as evidence of a large increase in the pucker factor. But yes, it may well be any number of things and not the Death Wobble.

 

On a more practical track, you might want to check ball joints, wheel bearings, and my favorite, the sticking caliper. I suspected a caliper problem, drove the truck, coasted to a stop in a large parking lot, and got out with my handy Infrared Thermometer, and "shot" the brake discs. On each axle they should be about the same, I had one that was sticking and making that disc heat more. But this was in combination with ball joints.

 

Warped rotors, that along with a slightly warn out suspension and steering components will cause this to happen.