Exhaust smell!
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, Exhaust smell! in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; Hey guys, I've had a check engine light come on, went to auto zone came up to be o2 sensor ...
  1. #1
    956Caddy's Avatar
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    Exhaust smell!

    Hey guys, I've had a check engine light come on, went to auto zone came up to be o2 sensor but my problem is that I can smell exhaust in my ac and can hear like a leak in exhaust when car is on. My possible source is a leak in exhaust or plugged catalytic converter? Whats ya"all thoughts?


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    Bluehaze07's Avatar
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    Quote Originally Posted by 956Caddy
    Hey guys, I've had a check engine light come on, went to auto zone came up to be o2 sensor but my problem is that I can smell exhaust in my ac and can hear like a leak in exhaust when car is on. My possible source is a leak in exhaust or plugged catalytic converter? Whats ya"all thoughts?
    You should check the catalytic converter flange. It may be a weak point on the exhaust.

  4. #3
    956Caddy's Avatar
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    Went to muffler shop today and could not find a possible leak in exhaust other than probably on donuts where cat meets or at manifold. Also its only on passenger side.

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    Blayne's Avatar
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    Quote Originally Posted by 956Caddy
    Went to muffler shop today and could not find a possible leak in exhaust other than probably on donuts where cat meets or at manifold. Also its only on passenger side.
    Well that sounds like two possible spots.

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    Bluehaze07's Avatar
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    Quote Originally Posted by 956Caddy
    Went to muffler shop today and could not find a possible leak in exhaust other than probably on donuts where cat meets or at manifold. Also its only on passenger side.
    I have a leak at the spot where the cat meets the manifold. I was gonna get new cats but i changed my mind. I am gonna get it re-welded. For 60 or so bucks. I am taking the cat off myself.

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    956Caddy's Avatar
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    Does anybody know the warranty for exhaust systems? I once read somewhere it was like 9years or 10 years

  9. #7
    956Caddy's Avatar
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    Got it fixed for 100 bucks, they took off cats and welded exhaust . now on to the next

  10. #8
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    How's it sound with no cats?

    Sent from AutoGuide.com Free App

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    956Caddy's Avatar
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    Freaking loud, almost like a chopper down the freeway.

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    Planktron's Avatar
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    Quote Originally Posted by 956Caddy View Post
    Freaking loud, almost like a chopper down the freeway.
    Lol is that a bad loud or a good loud.

    Sent from AutoGuide.com Free App

  13. #11
    956Caddy's Avatar
    956Caddy is offline Cadillac Owners Fanatic
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    Re: Exhaust smell!

    Quote Originally Posted by Planktron View Post
    Lol is that a bad loud or a good loud.

    Sent from AutoGuide.com Free App
    It sounded cool but since it was on a Caddillac, no no, not too good

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