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2001 Chevy Impala When i try to speed up it blogs down and wont speed up. What causes this ive changed the fuel filter already

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Probably a bad sensor. Maybe a TPS or MAF. Sounds like things are not mixing correctly or firing right. OR the fuel pressure is bad and that's either the pump or bad fuel rail and a fuel return can cause probs also. I'd check the fuel pump 1st, then sensors, then fuel rail

Posted on Sep 02, 2010


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