1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Damn smog check!

Discussion in 'Civic and CRX - EW' started by humblegumbo, Jun 5, 2007.

  1. humblegumbo

    humblegumbo 1595cc's of Mad Fury

    Messages:
    470
    Likes Received:
    6
    Joined:
    Feb 21, 2007
    Location:
    CA
    So, I failed my smog check yesterday. I'm very sad about this because the CRX is my first true love. :wub: The possibility of not spending every day with her breaks my heart. If I can't get her fixed, I can't register in CA. :cry2:

    The failure was due to high NOx readings and inoperable engine light.

    Now, the engine light is straight forward electrical problem. Not easy for me to solve because wiring is not my strong suit, but I think I can figure it out. It's an old problem that I haven't gotten around to fixing it yet.

    What worries me is the high NOx reading. Doing research I've learned that this is most likely caused by high combustion chamber temp/pressure or malfunctioning EGR valve.
    I don't think the engine is running too hot in general, but I haven't checked because the temp gauge is dead (along w/ engine light).
    Other potential causes for high temp/pressure are: lean mixture, carbon buildup, and advanced timing.
    So...I need to buy a timing light to check the timing. Before I do that, I would like some advice on how to check the fuel mixture and cylinder compression ratio.

    Other questions include, but are not limited to:
    How do I check the EGR for functionality?
    How do I check for carbon buildup without pulling apart enging?
    Why does CA have to get all up in my shit and ruin my day? :ranting2:

    Thanks.
     
    1 person likes this.
  2. SiR_crx

    SiR_crx New Member

    Messages:
    121
    Likes Received:
    0
    Joined:
    Nov 10, 2006
    Location:
    Nebraska
    yeah... bitches gotta be frontin...
     
  3. eg6sir

    eg6sir Supa Mod Moderator VIP

    Messages:
    21,703
    Likes Received:
    321
    Joined:
    Aug 17, 2005
    Location:
    661 BK CA
    i had trouble passing smog last year due to high NOx readings.. i changed my cat and o2 sensor and had no trouble passing
     
  4. humblegumbo

    humblegumbo 1595cc's of Mad Fury

    Messages:
    470
    Likes Received:
    6
    Joined:
    Feb 21, 2007
    Location:
    CA
    That's it?
    O2 sensor and cat are both 1991 stock items. I replaced everything else from the block to the tailpipe. So, the added expense of new cat and sensor will almost have to guarantee fix. Cat appears functional...how to test O2 sensor?
     
  5. eg6sir

    eg6sir Supa Mod Moderator VIP

    Messages:
    21,703
    Likes Received:
    321
    Joined:
    Aug 17, 2005
    Location:
    661 BK CA
    if you're having that much trouble.. take the car to a smog shop and have them run a diagnostic on it.. it'll tell them why its reading high

    how old is the o2?? thats generally the case when failing smog.. especially since you've replaced everything
     
  6. humblegumbo

    humblegumbo 1595cc's of Mad Fury

    Messages:
    470
    Likes Received:
    6
    Joined:
    Feb 21, 2007
    Location:
    CA
    Well, yes, that's in work.
    I've also applied for gov financial aid towards repairs. To qualify, I won't be able to get a shop to work on it until after I am accepted, then they'll give me up to $500 towards smog related repairs. I think it's probably worth it. I can't afford to play the old swap and pray game.

    I just really don't like other people (including professional mechs) monkeying around with my baby.
    I get jealous.
    Seriously.
     
  7. eg6sir

    eg6sir Supa Mod Moderator VIP

    Messages:
    21,703
    Likes Received:
    321
    Joined:
    Aug 17, 2005
    Location:
    661 BK CA
    then get voltage meter and measure the voltage on the o2.. not sure what its supposed to be at.. but a simple google search will pull that up
     
  8. CRX-YEM

    CRX-YEM Super Moderator Moderator VIP

    Messages:
    4,623
    Likes Received:
    54
    Joined:
    Sep 29, 2002
    Location:
    Wallingford, CT
    the output of the lambda sensor will fluctuate between 0-1volt. and it won't be steady or easy to read either. with a volt meter you'll only be able to check if it's pegged high 1 volt or low 0 volts. other than that a stoichiometric reading is usually about .5 volts, A working O2 sensor will most likely fluctuate from .3 to .75 volts
     
    Last edited: Jun 6, 2007
    1 person likes this.
  9. humblegumbo

    humblegumbo 1595cc's of Mad Fury

    Messages:
    470
    Likes Received:
    6
    Joined:
    Feb 21, 2007
    Location:
    CA
    Just got my approval letter from CA Bureau of Automotive Repair yesterday.
    This is awesome news for me, and for you all that live in CA and fail a smog check. I now have $500 for emissions related repairs! Yay!

    Too bad they didn't just give me cash, though....
     
  10. humblegumbo

    humblegumbo 1595cc's of Mad Fury

    Messages:
    470
    Likes Received:
    6
    Joined:
    Feb 21, 2007
    Location:
    CA
    Got my baby back!

    Such a sweet deal. For one the shop fixed the wiring nightmare that the prev. owner left behind. It's so nice to have turn signals and a tach again! They also threw in a new cat. So, now the entire exhaust is new from tip to tip except for a few bolts and nuts.

    Thinking about leaving my stereo out for another week because it's so much lighter in the rear w/o it. Didn't trust the shop "security system" w/ two amps, sub, and 12-disc.

    Whee! Can't wait to get off work!
     
  11. eg6sir

    eg6sir Supa Mod Moderator VIP

    Messages:
    21,703
    Likes Received:
    321
    Joined:
    Aug 17, 2005
    Location:
    661 BK CA
    ahh yes.. i know how it is not to drive your car because of smog and when it finally passes, you're the happiest SOB alive.. well thats how i was when i passed BAR.. it just happened to be on 4/20 06 and i got super stoned as a celebration once i got home..
     
  12. humblegumbo

    humblegumbo 1595cc's of Mad Fury

    Messages:
    470
    Likes Received:
    6
    Joined:
    Feb 21, 2007
    Location:
    CA
    :werd:
    must be nice...had to give that up almost five years ago. (my fault for joining military)

    I'm out this October, though.... :mrgreen:
     
Verification:
Draft saved Draft deleted

Share This Page