Passing Smog
10

Asked by lytcandles Sep 11, 2011 at 02:40 PM about the 1993 Nissan Sentra XE

Question type: Maintenance & Repair

HELP!!! My 1993 Nissan Sentra has 200,000 miles on it runs great replaced all the tune-up parts and the catalytic converter and it just barly fails emission test H/C's too high at 25mph can anubody out there help me?

1 Answer
4,555

Doran answered 12 years ago

Hydrocarbons are unburned fuel, so I would replace the O2 sensor and air filter if you haven't already, double check the ignition timing, and try cleaning the MAF sensor (ONLY use MAF-SPECIFIC cleaner for this!).

Mark helpful

Your Answer:

Related Questions

  • Passing Smog 2 Answers

    My Nissan Sentra 1.6L has 200,000 miles on it it passed smog two years ago with flying colors now the H/Cs are too hight did a tune up? It's at the 15 mph speed that the h/cs are around 150ppm anyone ...

    1993 Nissan Sentra XE

    -

    Maintenance & Repair

  • Passing Smog 1 Answer

    HELP!!! My 1993 Nissan Sentra has 200,000 miles on it runs great replaced all the tune-up parts and the catalytic converter and it just barly fails emission test H/C's too high at 25mph can anubody ou...

    1993 Nissan Sentra XE

    -

    Maintenance & Repair

  • How can I get around passing smog tes 4 Answers

    I need to pass smog in nevada to renew registration. How do I do this with the check engine light remaining on I changed off sensors like possibly could last year and still have the same prob...

    2005 Nissan Frontier 4 Dr LE 4WD Crew Cab SB

    -

    Maintenance & Repair

  • 1994 Nissan Sentra won't pass smog. What to do first? 5 Answers

    The car was given to me after it was involved in a minor accident. It hwas current on smog and reg. but dmv requires smog for owner transfer. I put new radiator plus over flow tank, hood fenders etc...

    1994 Nissan Sentra Limited (1994.5)

    -

    Maintenance & Repair

  • passing smog test 1 Answer

    How do I reset the sensor for the catalytic converters so the car will pass smog. They were replaced less than 2 years ago and 6 months ago the battery was replaced. There is no code coming up.

    2002 Ford Thunderbird

    -

    Maintenance & Repair

Shortcuts

Search Nissan Sentra Questions

CarGurus Experts

  • #1
    Doran Harney
    Reputation
    2,980
  • #2
    L_R
    Reputation
    2,900
  • #3
    GuruLK5L9
    Reputation
    1,510
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Nissan Altima
27 Great Deals out of 659 listings starting at $1,995
Used Honda Civic
189 Great Deals out of 3,937 listings starting at $1,130
Used Toyota Corolla
131 Great Deals out of 2,233 listings starting at $3,495
Used Toyota Camry
53 Great Deals out of 1,014 listings starting at $3,995
Used Honda Accord
42 Great Deals out of 976 listings starting at $2,995
Used Hyundai Elantra
158 Great Deals out of 3,026 listings starting at $1,995
Used Nissan Maxima
6 Great Deals out of 193 listings starting at $3,999
Used Hyundai Sonata
43 Great Deals out of 856 listings starting at $1,543
Used Volkswagen Jetta
90 Great Deals out of 1,905 listings starting at $3,975

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.