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High NOx levels - link to article Posted by Bill Homer [Email] (#3427) [Profile/Gallery] (more from Bill Homer) on Mon, 26 Jan 2004 08:54:17 In Reply to: Re: Here's the escape clause.. (and the limit is $450!), NO Snaab, Fri, 23 Jan 2004 21:27:15 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Yaofeng,
Per my first suggestion of the "escape clause", I said that it would keep you legal but wouldn't address the actual problem. I happened upon this article from the Air Care Colorado program, where they discuss causes for high NOx levels - identified here as typically due to dirty Mass Air Flow (MAF) sensors, which I believe that Volvo uses. Look about half way down the page and you will see a case study on this. The writer cleaned up the MAF with some carb and brake cleaner and a toothbrush, passed the retest.
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