what causes the engine to bog down and shake like it wants to die after you let off the gas

1987 LINCOLN MARK VII
96,000 MILES
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LUCKYLOKI
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just bout the car and it has some minor problems but would the mufflers being clogged up and have holes in them cause the motor to bog down when you let off the accelarator
May 12, 2012 at 7:03 PM
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RASMATAZ
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Check the catalytic converter if its clogged-up,EGR valve and throttle position sensor-
May 12, 2012 at 7:16 PM
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LUCKYLOKI
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thank you very much, i'll see what i can do, thank you again
May 12, 2012 at 10:23 PM
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RASMATAZ
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Your welcome
May 16, 2012 at 12:07 AM