Cadillac: Car Begins To Shake Violently, engine coolant, cadillac sedan deville

Question
I'll be driving my car (a '91 Cadillac Sedan DeVille) and suddenly, the steering wheel starts to shake violently, as does the rest of the car.  I can speed up or slow down, and it will go away, but its lasting progressively longer and I have no idea what's going on.  Afterwards, when I stop the car, I can hear what sounds like the coolant bubbling some.  I'm not sure if that has anything to do with it.  I was hoping maybe you could give me some insight into why my car's doing this.

Answer
Faulty ball joints, struts, front suspension parts and tires can acuse this problem and should be checked NOW before a serious accident occurs due to TOTAL FAILURE of the faulty part or parts.

The boiling of the engine coolant may or may NOT be realted, But I would definately hve this checked also UNLESS you want to buy a new ENGINE.

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