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1999 Pontiac Grand Prix poor acceleration, supercharger mal



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Posted at Thu Jul 24, 2008 5:08 am
By nopower99gtp, New to the forum
Give Feedback | Votes: 0
   
Engine Performance problem
1999 Pontiac Grand Prix 6 cyl Two Wheel Drive Automatic 60,000 miles
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After seeing to repair shops still can't get the power to accelerate on entrance ramps and when needed on freeways. even supercharger screen in car shows I don't get the boost. Shops say they can't test it over 55mph and after $6oo I'm desparate. thanks
 
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