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

pyrolion answered 9 years ago

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

Mark helpful

Your Answer:

Related Questions

  • 2003 Ford F-150 bad misfire 1 Answer

    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. Noti...

    2003 Ford F-150

    -

    Maintenance & Repair

  • 2003 Ford f 150 3 Answers

    I have a 2003 Ford f 150. This afternoon I went outside to start my truck so I could start my day and it made a starting noise and then did nothing after that. I would insert the key turn it and it...

    2003 Ford F-150

    -

    Maintenance & Repair

  • 2003 Ford F-150 blown head gasket 2 Answers

    How do you fix a blown head gasket for 2003 Ford F-150? Is it expensive?

    2003 Ford F-150 Lariat Extended Cab 4WD LB

    -

    Maintenance & Repair

  • 2003 Ford f-150 4.6, o2 shows bad, bank 2 sensor 2, won't smog 1 Answer

    I have an 03 f-150, Check engine light is on. Replaced o2 sensor, MAF sensor. Clear the CEL, but the first time I kill the truck and start it back, within 2 minutes the CEL comes back on showing ...

    2003 Ford F-150 XL Extended Cab 4WD SB

    -

    Maintenance & Repair

  • 2003 Ford F-150 Won't start 1 Answer

    I have an 03 Ford F-150 5.4L. Every time i try to start it, all i get is a click click. One click when I turn the key, and another when i let go. I have replaced the battery, solenoid, and starter m...

    2003 Ford F-150 Lariat Crew Cab 4WD SB

    -

    Maintenance & Repair

Own this car?

Share your experience with others.

2003 Ford F-150

Write a car review

Review another car

Shortcuts

Search Ford F-150 Questions

CarGurus Experts

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

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Silverado 1500
4,160 Great Deals out of 123,229 listings starting at $1,999
Used GMC Sierra 1500
1,892 Great Deals out of 72,257 listings starting at $1,900
Used Ford F-250 Super Duty
1,288 Great Deals out of 51,787 listings starting at $2,905
Used Toyota Tundra
1,044 Great Deals out of 31,821 listings starting at $2,999
Used Toyota Tacoma
2,176 Great Deals out of 55,903 listings starting at $3,995
Used Dodge RAM 1500
76 Great Deals out of 1,407 listings starting at $650
Used Ford Ranger
655 Great Deals out of 21,674 listings starting at $1,900
Used Ford Mustang
947 Great Deals out of 19,852 listings starting at $1,950
Used Chevrolet Silverado 2500HD
1,016 Great Deals out of 40,369 listings starting at $2,495
Used GMC Sierra 2500HD
543 Great Deals out of 24,583 listings starting at $3,995
Used Ford F-350 Super Duty
717 Great Deals out of 28,767 listings starting at $4,984
Used Ford Explorer
2,384 Great Deals out of 56,615 listings starting at $1,950

Used Cars for Sale

2024 Ford F-150 For Sale
138 Great Deals out of 98,923 listings starting at $28,694
2023 Ford F-150 For Sale
867 Great Deals out of 9,860 listings starting at $17,995
2022 Ford F-150 For Sale
789 Great Deals out of 7,935 listings starting at $15,565
2021 Ford F-150 For Sale
971 Great Deals out of 10,225 listings starting at $13,984
2020 Ford F-150 For Sale
561 Great Deals out of 5,479 listings starting at $8,995

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. Content will be removed if CarGurus becomes aware that it violates our policies.