i lost my horsepower now its having a hard time accellerating what might this be on 1997 Buick Park Avenue

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i was driving and then i realized that when i went to eccellerate
(3) Answers
What breed of horses did you lose? Belt still on supercharger? hose leaks? by-pass stuck open? Is it overheating? Does check engine light keep flashing while driving? We need a response in order to help....................never mind just buy new horses.
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