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Catalytic converter is fried

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Old 02-21-2005, 11:26 AM
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DrValidus
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Default Catalytic converter is fried

Looks like my cats are either clogged or fried (whatever the term is). Although I am not a mechanic, here are the reasons why I think this:

1. I smell burning with WOT (and it's not the tires)
2. It takes forever for my car to get to speed when I floor the gas especially in 3rd or 4th gear.
3. When I start the car, the right 2 exhaust tips doesn't blow as much smoke as the left 2.
4. My exhaust tips are covered in soot. And they have less than 1,000 miles on them.

I am thinking about getting the random cats.

http://www.ecklers.com/product.asp?dept%5Fid=157&pf%5Fid=45407& mscssid=3AF43QQ9H79X8L42VR487C23E6HCFUB7

Whaddya guys think? Oh, BTW... My car is a 98 Manual coupe with 30,000 miles. It's my daily driver in NYC. Thanks for the inputs.
Old 02-21-2005, 11:50 AM
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screw991le
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Sounds like you were running rich to long, let us know how you make out. Now is a good excuse for some high flow cats.
Old 02-21-2005, 12:42 PM
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CarsRFun
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check your dic see if you are getting any O2 codes.
Old 02-21-2005, 12:43 PM
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90 droptop
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I think when the cats go, you should see little specs of silver out the back of the car.
Old 02-21-2005, 02:01 PM
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Pilot135R
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Originally Posted by screw991le
Sounds like you were running rich to long, let us know how you make out. Now is a good excuse for some high flow cats.
Don't forget the Long Tube Headers and the performance tune!
Old 02-21-2005, 02:31 PM
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DrValidus
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Originally Posted by 90 droptop
I think when the cats go, you should see little specs of silver out the back of the car.
YUP

My only question is... My car only has 30,000 miles on it. Why would the cats go so soon?
Old 02-21-2005, 02:34 PM
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StuzVette
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Originally Posted by DrValidus
YUP

My only question is... My car only has 30,000 miles on it. Why would the cats go so soon?

StuzVette had a hairball and just saw a huge gain in power...
...now... headers, hi-flow cats and X-pipe with B&B bullets
Old 02-21-2005, 02:35 PM
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Vettlldo
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Something is either causing a rich fuel mixture or you are burning oil - either condition will fry a cat. You need to figure out what the problem is first before spending the $$ on new cats.
Old 02-21-2005, 02:52 PM
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Originally Posted by Vettlldo
Something is either causing a rich fuel mixture or you are burning oil - either condition will fry a cat. You need to figure out what the problem is first before spending the $$ on new cats.
Could this be due to a F'ed up dyno-tune?
Oh yea, and there are no codes on the DIC
Old 02-21-2005, 03:47 PM
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Did they dork with the fuel/air mixture during the dyno tune? If so, it is probably your first source of failure.
Old 02-21-2005, 10:13 PM
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Face
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If your cats are clogged you can blow your motor, be careful.

Another good way to tell if they're clogged, after driving for a couple of minutes, pop the hood in a dark area. If they exhaust manifolds are glowing red, there's a very good chance the cats are clogged.

Time for some LT headers.
Old 02-21-2005, 11:37 PM
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Stock Man
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Originally Posted by Vettlldo
Something is either causing a rich fuel mixture or you are burning oil - either condition will fry a cat. You need to figure out what the problem is first before spending the $$ on new cats.
Don't spend good money before you know what's going on. You might be right but it might be the engine is throwing codes and something else is causing things to go bad. Keep us posted.
Old 02-22-2005, 05:52 PM
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Vetteman Jack
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I agree, find the source of the problem before spending a lot of cash on new parts. You can always add the new cats/headers, etc if you want, but would not want more problems to appear down the road.

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