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Will a bad Cat make you run rich?

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Old 06-23-2006, 10:12 PM
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Default Will a bad Cat make you run rich?

hey guys.....I failed emissions becasue of a bad cat....also i think im running a little rich, becasue when i stop at a stoplight, some white smoke comes out, and 2 mechanics that im friends with say they think im just running a little rich...so i have 4 questions

1 will a bad cat make you run rich?
2 How can you do a "scan" to see if your running rich?
3 how can you fix running rich? whats a good product to use
4 Is it better to run rich if Im going to use Nitrous? I have a NX kit installed on my car
Thanks
Old 06-24-2006, 12:21 AM
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I have the same problem as you do. If your running rich you will throw these two codes P0172 and P0175 (02's)...thats what im throwing. Im also throwing P0430 meaning I have a bad cat. Go to autozone and they should have a scanner you can plug into your car. You might have to pay $170 for a deposit but you get it back as soon as you return it. I tried to look at this site but I dont understand it to the fullest maybe your friends can check out this site and help both of us out. http://gearchatter.com/
Old 06-24-2006, 12:47 AM
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nah....not throwing those codes.....just PO430
Old 06-24-2006, 12:48 AM
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I was throwing a code for a bad 02 sensor.....but i cleared codes and it hasent came back
Old 06-24-2006, 12:54 AM
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Hey Tyler...i found this http://gearchatter.com/viewtopic8856...5faff1fde0e4a4

I think that means Our PCM will be running a rich or lean status until we get it fixed? i might be wrong tho
Old 06-24-2006, 10:36 AM
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Originally Posted by StatixNWH
Hey Tyler...i found this http://gearchatter.com/viewtopic8856...5faff1fde0e4a4

I think that means Our PCM will be running a rich or lean status until we get it fixed? i might be wrong tho

So basically we need a new cat?
Old 06-24-2006, 06:21 PM
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im not really sure....but i think a bad cat could make you run a lil rich...i hafto do it anyway cause i failed emissions
Old 06-26-2006, 10:11 PM
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Originally Posted by StatixNWH
im not really sure....but i think a bad cat could make you run a lil rich...i hafto do it anyway cause i failed emissions

So will I, guess I get new SLP Hi-flo cats lol.



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