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High NOX solved.... 200

posted by  someone claiming to be Swedish Babe on  Tue Oct 12 03:22 CST 2004 [RELATED]

Hello, My car finally passed the smog test here in CA.after failing for high NOX. The symptoms was pinging and power loss on acceleration and going uphill.I have replaced the cat/in tank fuel pump/ main fuel pump/spark plug/rotor/distributor cap. However, the problem persisted. Finally gave up and took it to a mechanic blocks from my house. He replaced the 02s (it was orig. w/ 180000 miles on it!) and set the timing. Now the car has full power going uphill/acceleration and NOX dropped from 1470 to 680! Hope this helps bricksters who fail smog check for high NOX. By the way, the mechanic charge me $430 for diagnosis and the 02s...... OUCH!








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    High NOX solved.... 200

    posted by  vvpete on  Tue Oct 12 08:52 CST 2004
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    last visit: Thu Jul 10 14:10 CST 2014
    [RELATED]

    That's a steep cost for the O2 sensor. I had the orig one on my '89 245 go out @ 245k.
    My NOx was ~680, which is considered 'marginally acceptable' reading, and indicates a bad cat or mixture problem that caused the cat to go bad. The damage to the cat was done, so replacing the O2 sensor alone wasn't enough. I replaced the cat which started to rattle and the NOx went to 12!
    I would suspect that you've clogged up the new cat from the problem that existed before you replaced it. Sorry to say that your problems may not be over.
    --
    '89 245 Sportwagon, '04 V70 2.5T Sportwagon








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    High NOX solved.... 200

    posted by  someone claiming to be 81242DLB21FCA on  Tue Oct 12 06:54 CST 2004 [RELATED]

    For future reference, if your in or around the San Francisco Bay Area I can put you in contact with some of our local owner/experts: presidio2k@yahoo.com.








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    High NOX solved.... 200

    posted by  richink on  Tue Oct 12 04:25 CST 2004
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    last visit: Wed Dec 22 04:40 CST 2010
    [RELATED]

    Hello,

    Yep 430 is high for that considering it's the first thing any mechanic with half a brain would check if the car didn't pass emissions, the sensor is under 200 even from the dealer (FCP Groton sells a Bosch for 125, and a Walker universal for 50), takes 2 seconds to diagnose and 2 minutes to change.

    But.... good to see your brick runs perfect now!!!

    --
    Happy Bricking!!! - Richard - '87 245 DL , '82 242 GLT - Half a million km between them!!!







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