2003 Ford F-150 bad misfire

Asked by Brandon May 25, 2015 at 03:26 PM about the 2003 Ford F-150

Question type: Maintenance & Repair

My truck is missing really bad. Check engine
light came on and code says lean on bank 1.
I changed COP's, plugs, and fuel filter. Ran
good for a couple months and just started
doing it again. Noticed one day my iat
sensor was out and hanging down one day. I
don't know if this has anything to do with it
or not

1 Answer

530

Maybe check your mass air flow sensor. If it is malfunctioning it can read too lean or too rich! Try cleaning it......

Your Answer:

CarGurus Experts

  • #1
    OJ
    Reputation
    42,520
  • #2
    Gene Arnett
    Reputation
    16,040
  • #3
    Rowefast
    Reputation
    15,860
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
202 Great Deals out of 5,975 listings starting at $2,975
Used GMC Sierra 1500
148 Great Deals out of 7,258 listings starting at $3,950
Used Ford F-250 Super Duty
24 Great Deals out of 1,204 listings starting at $7,995
Used Toyota Tundra
35 Great Deals out of 1,184 listings starting at $8,500
Used Toyota Tacoma
55 Great Deals out of 1,071 listings starting at $8,708
Used Dodge RAM 1500
3 Great Deals out of 71 listings starting at $4,000
Used Ford Ranger
18 Great Deals out of 1,529 listings starting at $2,888
Used Ford Mustang
65 Great Deals out of 1,259 listings starting at $4,995
Used Chevrolet Silverado 2500HD
16 Great Deals out of 1,285 listings starting at $8,995
Used GMC Sierra 2500HD
17 Great Deals out of 1,640 listings starting at $9,988
Used Ford F-350 Super Duty
39 Great Deals out of 2,598 listings starting at $8,888
Used Ford Explorer
86 Great Deals out of 2,065 listings starting at $2,999

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.