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catalytic converters

This is a discussion on catalytic converters within the External Engine forums, part of the LSx Technical Help Section category; Ok, I took my car into GM because the ses light was on. It turns out both cats are completely ...

  1. #1
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    pewter
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    catalytic converters

    Ok, I took my car into GM because the ses light was on. It turns out both cats are completely clogged and bad. They will replace them for free and the guy called and said "I don't know how you had any power at all this will really rob your power." "I think you will be surprised with what kind of power you have when we get it fixed." Could that be right? I got kind of excited and I don't want to have my hopes up if he is just full of it....

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    Member Sweet Chops's Avatar
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    Oh yes. It will even sound diffrent. Don't you just love getting something for free.

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    The Bandit Wesman's Avatar
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    Quote Originally Posted by gfeller2006 View Post
    Ok, I took my car into GM because the ses light was on. It turns out both cats are completely clogged and bad. They will replace them for free and the guy called and said "I don't know how you had any power at all this will really rob your power." "I think you will be surprised with what kind of power you have when we get it fixed." Could that be right? I got kind of excited and I don't want to have my hopes up if he is just full of it....
    Its possible, but only if they are actually clogged. Cats can also go bad without being clogged, they just become inefficient.

    So if they are in fact clogged (which is difficult to tell unless you hold the cat up to the light and look through the honeycomb) you should notice that the engine has more power and sounds better.

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    Member fxgs's Avatar
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    Quote Originally Posted by Sweet Chops View Post
    Oh yes. It will even sound diffrent. Don't you just love getting something for free.
    Free............wait until he gets the bill.......................

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    Senior Member Too Fast's Avatar
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    Yeah I thought they were only warranted for 8 years/96K miles? Maybe his car was barely under the warranty. Unless it was extended.

    And if they were somewhat clogged, you will see an increase in power/MPG. Let us know!

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    Your damn right its free! 00-02's were under warranty on teh cats for ten years or 100,000 miles! It was basically a recall extended warranty...

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    Your best bet for power is to get rid of them completely. Save the old ones and have the new ones put on and sell all 4!

  8. #8
    Give me a place to stand. levityinc3's Avatar
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    Quote Originally Posted by gfeller2006 View Post
    Your damn right its free! 00-02's were under warranty on teh cats for ten years or 100,000 miles! It was basically a recall extended warranty...
    Does that mean that the Chevy Dealer I called lied to me? My engine light was on and I did the OBD sensor and it came back to the cat. I called the dealer and he said the warranty on it was up by one month. It's a 2000.
    Last edited by levityinc3; 03-31-2009 at 05:35 PM.

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    Member fxgs's Avatar
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    Quote Originally Posted by levityinc3 View Post
    Does that mean that the Chevy Dealer I called lied to me? My engine light was on and I did the OBD sensor and it came back to the cat. I called the dealer and he said the warranty on it was up by one month. It's a 2000.
    If they did, complain to President Obama since he runs General Motors now...............

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    Senior Member big hammer's Avatar
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    Quote Originally Posted by TempleU_WS6 View Post
    Your best bet for power is to get rid of them completely. Save the old ones and have the new ones put on and sell all 4!
    that's what i did! works great

  11. #11
    Give me a place to stand. levityinc3's Avatar
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    Quote Originally Posted by fxgs View Post
    If they did, complain to President Obama since he runs General Motors now...............
    Seriously, I need an answer. I guess I'll try calling GM tomorrow. If anyone has any advice then let me hear it.

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    Member fxgs's Avatar
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    Quote Originally Posted by levityinc3 View Post
    Seriously, I need an answer. I guess I'll try calling GM tomorrow. If anyone has any advice then let me hear it.
    Quote Originally Posted by fxgs View Post
    If they did, complain to President Obama since he runs General Motors now...............
    I was being serious..................

  13. #13
    Senior Member Too Fast's Avatar
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    Just call them and find out. Have your VIN ready. Tell them you heard something about an extended warranty for the catalytic convertors. It is also possible that you missed it by a month.

    BTW, you might want to consider an ORY or headers and ORY. We live in IN, no emissions checks.

  14. #14
    Junior Member jprice's Avatar
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    just got mine replaced for free except they called to tell me that i needed a new o2 sensor or the new cats would fail 150 later didnt notice a power difference

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    Member RedSmokey's Avatar
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    does an ORY make much/any difference with stock exhaust manifolds?

  16. #16
    Give me a place to stand. levityinc3's Avatar
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    Quote Originally Posted by Too Fast View Post
    Just call them and find out. Have your VIN ready. Tell them you heard something about an extended warranty for the catalytic convertors. It is also possible that you missed it by a month.

    BTW, you might want to consider an ORY or headers and ORY. We live in IN, no emissions checks.
    Yeah, I'm short of cash right now, but I am going to get the Texas Speed true duals x-pipe. Although because of boredom and poorness, I was thinking about just chopping off my cat. Haha.

  17. #17
    Give me a place to stand. levityinc3's Avatar
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    I just called. They said that the warranty expired August of 2008, and that my cat had already been replaced somewhere around the 23k mile range by the previous owner.

    How the hell did you get 10 years?

  18. #18
    TJEA Retirement Home Dr.Crash's Avatar
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    what are these catalytic converters you speak of?

  19. #19
    Member va2001ss's Avatar
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    I just had both Cats replaced under the extended warranty. The letter I received from GM says 10 years/ 120,000 miles. I do feel a significant improvement in power. I had no codes but the CATS would make a sound like a spray paint can rattling and the engine would knock when it normally wouldn't under load. Here is a copy of it.


  20. #20
    Senior Member Too Fast's Avatar
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    Quote Originally Posted by RedSmokey View Post
    does an ORY make much/any difference with stock exhaust manifolds?
    Maybe 5 HP and also louder no matter what type of cat back you have.

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