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10-12-2009, 10:46 AM
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#1 | |
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AF Newbie
 Join Date: Nov 2006
Location: Orange, California
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94 Camaro - reason for failing smog emissions?
I took my Camaro in to get smogged this weekend, and it passed everything except the Nitrous Oxide at 25 mph (it passed at 15 mph). The max allowable is about 700 ppm, and my car was about 1,200 ppm. Is there something that is common on 1994 Camaros that could cause it to fail this? If not, what are the most likely things that could cause this? Thanks.
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My 1959 Ford Galaxie 
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10-13-2009, 12:24 AM
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#2 | |
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AF Enthusiast
Join Date: Sep 2004
Location: Somewhere, Missouri
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Re: 94 Camaro - reason for failing smog emissions?
How old is your catalytic converter? It might be getting old and inefficient.
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Sold 1994 Camaro Z28  Current Car 2003 Monte Carlo SS  Sold 2009 Kawasaki Ninja 500R 
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10-13-2009, 04:53 PM
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#3 | |
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AF Newbie
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Re: 94 Camaro - reason for failing smog emissions?
It might be the original cat (my Camaro has over 180,000 miles on it), but I'm not the original owner, so I'm not sure. We were thinking that might be it, but I was just wondering if there were other possibilities as well.
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My 1959 Ford Galaxie
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10-13-2009, 07:06 PM
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#4 | |
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AF Enthusiast
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Re: 94 Camaro - reason for failing smog emissions?
One way to check, is to get under the car and look at it. If there are no weld marks on the back side of the cat to the I-pipe then its original.
You'll more than likely need a new one. They are expensive but its one of the only ways pass, without finding a shop that you can pay off or something like that.
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Sold 1994 Camaro Z28 Current Car 2003 Monte Carlo SS Sold 2009 Kawasaki Ninja 500R
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