» » »

Honda Q&A

Ask Your Question

1993 Honda Accord Question: my honda accord 1993 se fail smog to much nox what repair is needed

 

Question

low rider, 2.2L 4 Cylinder, Hayward, CA, March 08, 2011, 17:09
 Rookie

how can I pass smog

3 Answers
Flag This
  • Medium-star Best Answer
    mastertech6371 March 08, 2011, 17:12
    Profile_thumbnail
     Master

    what was the hc and co readings??

    Roy

    Flag This
  • Reply

    low rider, March 08, 2011, 17:43
     Rookie

    hc(ppm) max 61 meas76 test 15mph 25mph max36 meas 57 the ci max0.51 meas0.75 15mph 25mph max0.49 meas0.69

    Flag This
  • Reply

    mastertech6371, March 08, 2011, 18:00
    Profile_thumbnail
     Master

    ok, a couple of things. with both the hc and co high, i would install a new o2 sensor. i would also change the oil and filter. that will increase your nox reading. i hate to say this but the cat is going to have to be replaced as well. it cannot process the gases and break them down.

    Roy

    Flag This
  • Reply

    Visitor, March 15, 2011, 16:27

    hi mastertech about my 1993 honda accord not passin smog could the intake control soleniod valve be a problem from not producing enough air

    Flag This
  • Reply

    Visitor, March 15, 2011, 17:01

    this will effect the mixture going tinto the cylinders for the perfect 14.7 to 1 air fuel ratio. it will not change the fact that the cat is worn out.

    Roy

    Flag This
  • Reply

    Visitor, March 17, 2011, 15:54

    mastertech you say that the cat is worn out,then why is it that my honda has no problelm driving 80 mph and starting right up?

    Reply
    Flag This
  • Answer #2

    Visitor, March 08, 2011, 17:33

    We gonna need more info than that! Come on...

    Reply
    Flag This
  • Answer #3

    Hal... (see my shops), March 08, 2011, 17:35
    Profile_thumbnail
     Master

    Please more specific. Your vehicle has a number of common repairs to make it run more efficiently.

    Reply
    Flag This