2003 Chevy Monte Carlo car does not accellorate properly

2003 CHEVROLET MONTE CARLO
70,000 MILES • 6 CYL • FWD • AUTOMATIC
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MOTFIAMIKE
  • MEMBER
  • 2 POSTS
i scanned the computer and i received code po404 which was something do with improper egr something i replaced the egr valve and i have the same problem there is also a whistling sound when i try to accellorate. any thoughts on what my problem might be?
Sep 5, 2008 at 12:17 PM
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MOTFIAMIKE
  • MEMBER
  • 2 POSTS
it had a severe lack of power won't climb hills or shift properly it seems
Sep 5, 2008 at 12:24 PM
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BMRFIXIT
  • ✓ASE Certified Mechanic
  • 19,053 POSTS
  • ASE Certified Mechanic
check exhaust system
do a back pressure test on the exhaust system checking the catalytic converter flows

check for vacuum leaks
and MAF sensor
Sep 5, 2008 at 1:16 PM
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