2007 impala exceleration problems on 2007 Chevrolet Impala

have replaced cat converter and lower o2 sensor and plugs and wires and car still hesitates and spudders when i push gas

by in Port Saint Joe, FL on March 03, 2014
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2 answers
ANSWER by , March 03, 2014
Do you have an SES light on? If so what are the codes?
ANSWER by , April 27, 2014
have u figured out what was your problem my car is doing the same?