what a nightmare
Thread Starter
On The Tree
Joined: Oct 2005
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From: san diego
what a nightmare I have spent over $600 this week on smog related items. These were just to get the ses light to turn off. Today, I went to smog my car and it failed the sniffer. Everything was fine except the nitrous oxide levels at 15mph. The levels at 25mph passed fairly easily. Does this make sense? My car was at only 1300 rpm in the failed test and 2000 in the one that passed. They have to do it in second gear apparently. Why would my levels be way lower at 2000 rpm than 1300 rpm? What can I do to lower my levels at lower rpm? I hate California.
EGR valve not working probably. And you need to make the Vehicle run as hot as possible durring the test. 600!!! you should have just bought tuning software and shut off the codes...
TECH Enthusiast
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From: San Diego
Originally Posted by whatbrown
I have spent over $600 this week on smog related items. These were just to get the ses light to turn off. Today, I went to smog my car and it failed the sniffer. Everything was fine except the nitrous oxide levels at 15mph. The levels at 25mph passed fairly easily. Does this make sense? My car was at only 1300 rpm in the failed test and 2000 in the one that passed. They have to do it in second gear apparently. Why would my levels be way lower at 2000 rpm than 1300 rpm? What can I do to lower my levels at lower rpm? I hate California.
Thread Starter
On The Tree
Joined: Oct 2005
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From: san diego
02 level is .48-.58%. I tested the car twice today. The second time the car was hotter as I had floored it up and down the bouelevard a couple of times. The numbers for nox and pretty much everything else that run were worse. If nox is directly related to temperature, why can't I just run it cold? The other numbers are all well within spec.
Thread Starter
On The Tree
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From: san diego
My main concern is that the nox levels were way higher at 15mph than 25mph. Is this because the egr can't be entirely effective yet? Is it the cat? How can more rpm's produce less nox?
TECH Enthusiast
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From: San Diego
Originally Posted by whatbrown
My main concern is that the nox levels were way higher at 15mph than 25mph. Is this because the egr can't be entirely effective yet? Is it the cat? How can more rpm's produce less nox?
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All this for the Peoples Republic of Kalifornia? Does anybody think Aahnold's Hummer have any problem passing emissions? Think of all the money that you have spent on this crap and think about what you could have done with it for mods that would have it running stronger?
Thread Starter
On The Tree
Joined: Oct 2005
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From: san diego
I do think about that Doc. I have other issues with the car that I can't deal with now because I have spent so much money on the smog crap. Does anybody think smogging the car when it's cool is a good idea? Like I said, it's only nox that was bad and the other areas passed easily.
Thread Starter
On The Tree
Joined: Oct 2005
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From: san diego
The car is a 96 ws6. It has shorty headers, catback, and k and n. Other than that, it is stock performance wise. I think I failed the nox portion of the test because my car runs really hot. I tested it when it had been driven hard just prior to testing. I think if I warm the car up completely, then park it for a few hours, and test it after that it would pass.
Thread Starter
On The Tree
Joined: Oct 2005
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From: san diego
Failed smog again today. Car was tested while engine was cool. Nox numbers were similar to when engine was hot. It's weird because the nox easily passes at 25 mph, but fails pretty badly at 15mph. Do you guys think it's an egr issue?
Kalifornia sucks *****!!!
Id tune it and set stoich at like 16:1 just for the damn sniffer and then reflash back to 14.7:1 afterward. That way youll be nice and lean for the test, which will reduce emissions.
How many miles are on the car anyway? The cats may be going bad.
Id tune it and set stoich at like 16:1 just for the damn sniffer and then reflash back to 14.7:1 afterward. That way youll be nice and lean for the test, which will reduce emissions.
How many miles are on the car anyway? The cats may be going bad.
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From: Vancouver,[KITSILANO].B.C. Canada *WestCoast*
Originally Posted by whatbrown
Failed smog again today. Car was tested while engine was cool. Nox numbers were similar to when engine was hot. It's weird because the nox easily passes at 25 mph, but fails pretty badly at 15mph. Do you guys think it's an egr issue?
ENGINE MUST BE HOT... TECH Enthusiast
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From: San Diego
Originally Posted by whatbrown
Failed smog again today. Car was tested while engine was cool. Nox numbers were similar to when engine was hot. It's weird because the nox easily passes at 25 mph, but fails pretty badly at 15mph. Do you guys think it's an egr issue?
