Question about 1994 Nissan Altima

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Ohio echeck problem!

I have a 1994 nissan altima and it failed echeck in the nitrogen section of the test. any suggestions on what to fix to improve?

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  • Tony Hutson
    Tony Hutson May 11, 2010

    Do you have a check eng light on?



    Can you give me the specs from the echeck?



    I read the rules from Ohio and they apparently have some guidelines that are not listed on that website.



    (A) For purposes of ascertaining, defining, and measuring ambient air quality, nitrogen

    dioxide shall be measured by the methods stated in division (B) of this regulation or

    by such other methods as may be approved by the director. Such measurements shall

    be corrected to standard conditions for purposes of comparing measurements with

    the ambient air quality standard set forth in rule 3745-23-01 of the Administrative

    Code.

    (B) Concentrations of nitrogen dioxide shall be determined through the use of a reference

    method required by 40 CFR 50.11 based on 40 CFR Part 50, Appendix F, or through

    the use of continuous sampling and recording devices as approved by USEPA in

    accordance with 40 CFR Part 53 and designated reference or equivalent methods.

    (C) Incorporation by reference. This chapter includes references to certain matter or

    materials. The text of the incorporated materials is not included in the regulations

    contained in this chapter. The materials are hereby made a part of the regulations in

    this chapter. For materials subject to change, only the specific version specified in

    the regulation are incorporated. Material is incorporated as it exists on the effective

    date of this rule. Except for subsequent annual publication of existing (unmodified)

    Code of Federal Regulation compilations, any amendment or revision to a referenced

    document is not incorporated unless and until this rule has been amended to specify

    the new dates.





    (b) 40 CFR 50.11; "National Primary and Secondary Ambient Air Quality

    Standards for Nitrogen Dioxide; 50 FR 25544, June 19, 1985.

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  • 4 Answers

Nitrogen oxide is directly related to heat. Try running the test again when the engine is not that hot or try retarding the ignition timing just a few degrees.

Posted on Sep 24, 2008

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