What would make my car pull off slowly? on 1991 Buick Park Avenue

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The car rides smooth once it's moving but you have to hit the gas really hard to get it moving.
(2) Answers
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If it were a manual transmission I would say a bad clutch, it is most likely an automatic transmission so you may have a transmission problem, an accelerator cable that isn't opening the throttle fully. Perhaps a loss of full fuel pressure or volume.
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