how do I correct too lean air/fuel mix?

Asked by Jun 15, 2017 at 02:08 PM about the Pontiac Vibe

Question type: Maintenance & Repair

how do I correct too lean air/fuel mix on a 2005 Vibe? PO171 " mass airflow
sensor bank 1 1 too lean".

2 Answers

10,440

If your MAF sensor is sending bad info or the O2 sensor (cars with 2 sensors) is not working correctly it will screw the mixture up in fact when an O2 fails it reverts the engine to Rich

915

Most likely cause is a vacuum leak. But you could always try cleaning the Mass airflow sensor. With an over the counter MAF cleaner spray.

Your Answer

Pontiac Vibe Experts

  • #1
    dandyoun
    Reputation
    500
  • #2
    Tom Demyan
    Reputation
    310
  • #3
    Paul Washburn
    Reputation
    230
View All

Related Models For Sale

Used Toyota Matrix
68 Great Deals out of 498 listings starting at $2,500
Used Toyota RAV4
55 Great Deals out of 3,204 listings starting at $838
Used Toyota Corolla
256 Great Deals out of 3,968 listings starting at $1,840
Used Honda CR-V
62 Great Deals out of 2,425 listings starting at $200
Used Honda Accord
78 Great Deals out of 916 listings starting at $1,411
Used Honda Civic
302 Great Deals out of 3,147 listings starting at $995
Used Toyota Camry
90 Great Deals out of 2,242 listings starting at $1,781
Used Toyota Prius
175 listings starting at $3,980
Used Mazda MAZDA3
179 Great Deals out of 2,778 listings starting at $995
Used Ford Escape
212 Great Deals out of 5,477 listings starting at $1,350
Used Ford Focus
87 Great Deals out of 2,617 listings starting at $999
Used Subaru Forester
69 Great Deals out of 1,054 listings starting at $1,900
Used Honda Fit
16 Great Deals out of 739 listings starting at $1,495
Used Dodge Caliber
31 Great Deals out of 309 listings starting at $1,500
Used Saturn VUE
61 listings starting at $3,995

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.