Honda Civic VX failed NOx, EGR system not working

Discussion in 'Civic' started by Lee, Nov 1, 2004.

  1. Lee

    Lee Guest

    I have a 1993 Honda Civic VX (non-Calif model). I am having problems
    passing a smog check because NOx values at 15MPH are too high. I know
    the problem lies in my EGR system. The EGR valve is not opening
    because the EGR solenoid valve does not receive a signal from the
    computer (ECU). I have verified the operations of the EGR valve and
    EGR solenoid by jumpering a direct wire to the battery. When I do
    this the EGR solenoid and EGR valve opens and everything works great.
    I do NOT get any Check Engine light to help me narrow down the
    problem. Any help is greatly appreciated.
     
    Lee, Nov 1, 2004
    #1
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