Why is my buick century making a loud noise and shaking when acclerated?

1995 BUICK CENTURY
15,000 MILES
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MEGANHUNT
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My 95 buick century is making this loud noise.It sounds like a old chevy truck! I got new o2censors, catalyac convertor, muffler and pipes! Why is it making that noise and it shakes when accelerated over 50 mph.
Oct 15, 2012 at 12:02 AM
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ASEMASTER6371
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what kind of noise??? from where????

Roy
Oct 15, 2012 at 12:08 AM
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MEGANHUNT
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sounds like a old chevy truck rumbling. like motor or exhaust rumbles
Oct 15, 2012 at 12:41 AM
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ASEMASTER6371
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only thing i can say is that it is too vague of a description. have someone at a shop listen to it and get back to us with your findings

Roy
Oct 15, 2012 at 12:48 AM
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MEGANHUNT
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why want acclerate over 50mph and it wasnt doing it before!
Oct 15, 2012 at 1:36 AM
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SATURNTECH9
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You may have a plugged cat do you ever have to let up on the gas for it to shift to the next higher gear?
Oct 15, 2012 at 3:13 AM
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