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HIGH NO reading on new CALIF smog test-HELP! 700 1988

posted by  someone claiming to be marks volvo on  Fri Dec 12 16:48 CST 2003 [RELATED]

HI the new smog test in CALIF includes a rear wheel load test @2500rpm testing NO readings.My car flunked that portion of test at double the normal 750 reading. AT 130k I have replaced my catalytic convertor,before I have it tested again @55-80 $$$$$.Anything else need replacing? Car is tuned and i've cleaned flame trap,new plugs tomorrow a.m.-WHAT ELSE CAN I DO?thanks mark








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    HIGH NO reading on new CALIF smog test-HELP! 700 1988

    posted by  someone claiming to be marks volvo on  Sun Dec 14 14:13 CST 2003 [RELATED]

    thanks all! mark








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    HIGH NO reading on new CALIF smog test-HELP! 700 1988

    posted by  sonomac on  Sat Dec 13 02:47 CST 2003
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Thu Aug 9 12:29 CST 2012
    [RELATED]

    Check the airbox, thermostatically controlled flap, that controls fresh air intake.If this flap is stuck you will constantly be pulling heated air off the exhaust manifold and risk frying your AMM. This fix would would help lower combustion temperature and reduce NOX. Since I don't live in snow country I wired this flap open, but FCPgroton sells this part at their site.








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    HIGH NO reading on new CALIF smog test-HELP! 700 1988

    posted by  someone claiming to be swede4 on  Fri Dec 12 18:04 CST 2003 [RELATED]

    Yes, a lean mixture caused by vacuum leaks will cause high NO. A lean mixture can also be caused by a faulty air mass meter. Had to put a rebuilt on my car for $150.
    Make sure you go to a station that offers free retest in case of failure.
    Give the car an "Italian tune-up" before the test. In other words: drive the heck out of it , preferably on a long incline to put a good load on the engine at high RPM.( w/o blowing it up)








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    HIGH NO reading on new CALIF smog test-HELP! 700 1988

    posted by  Token Ring Man on  Fri Dec 12 17:09 CST 2003
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    Look for vacuum leaks, like injector seals.

    Note my correct spelling of vacuum, not vacume or some such BS.
    --
    Warren Bain - '99 V70GLT G-Valve > 80K mi, 89 300SE, '96 965 >120Kmi, near Manassas Va.. Check the 700/900 FAQ via the 'features' pull down menu.








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      HIGH NO reading on new CALIF smog test-HELP! 700 1988

      posted by  someone claiming to be MittenHed on  Fri Dec 12 19:51 CST 2003 [RELATED]

      Check an English dictionary, my provincial friend :} Poor spelling could be an affectation, and not just natural ignorance. I wonder if I exhibit both.







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