2004 Chevrolet Impala Sounds rough when running

Tiny
PAM MYERS
  • MEMBER
  • 2004 CHEVROLET IMPALA
  • 96,000 MILES
Car is making a sputtering noise underneath, and there's a funny smell outside and inside the car. Car is running a little sluggish when coming up to speed. A garage told me that it might be the converter and to bring it in to check it out. He said that if it is the converter, it could cost $400 to fix - but can't give me an estimate until he checks it out. So far, he just listened to it. He also said he smells something. Said the converter could be clogged.
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Wednesday, June 19th, 2013 AT 6:08 AM

3 Replies

Tiny
DOCFIXIT
  • EXPERT
Suspect restricted flow have exhaust back pressure checked. Suspect cloged CAT
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Wednesday, June 19th, 2013 AT 9:11 AM
Tiny
PAM MYERS
  • MEMBER
So do you unclog a CAT, or replace the CAT? If it needs replaced, are used ones an option to save cost?
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Wednesday, June 19th, 2013 AT 9:38 AM
Tiny
DOCFIXIT
  • EXPERT
Probably will not like answer but replace CAT and no salvage also the $400 quoted is aftermarket and does not work well. Car will have running problems and MIL light on most the time. GM made CAT is what is needed if that is what is wrong. The fact you did not mention MIL on or codes makes me think exhaust leak
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Wednesday, June 19th, 2013 AT 12:33 PM

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