Why is my truck running lean?

Asked by Jimmie Dec 29, 2020 at 06:19 PM about the 2003 Ford F-150 XL Extended Cab 4WD SB

Question type: Maintenance & Repair

I have a 2003 F-150 with a 4.6 V-8. I keep getting a
lean code for bank one and two. Also when I am on
the highway and try to pass, drop a gear. My RPM
goes to 3000 no power. I am out of options. Any
ideas?

1 Answer
22,660

Guru9FSV8 answered 3 years ago

Lots of things Bad fuel pump low pressure. Vacuum leaks. Bad mass air flow sensor. Bad oxygen sensor, clogged fuel filter or clogged injectors.

Mark helpful

Your Answer:

Related Questions

  • Why is my truck running lean? 1 Answer

    I have a 2003 F-150 with a 4.6 V-8. I keep getting a lean code for bank one and two. Also when I am on the highway and try to pass, drop a gear. My RPM goes to 3000 no power. I am out of options. A...

    2003 Ford F-150 XL Extended Cab 4WD SB

    -

    Maintenance & Repair

  • Why is my 1992 F1 50 ford truck running hot 1 Answer

    Why is it running hot

    1992 Ford F-150 STD LB

    -

    Maintenance & Repair

  • why is my truck running hot 3 Answers

    I just put a new water pump on my 1989 ford f150 pickup and now its running really hot, what have I done wrong

    1989 Ford F-150

    -

    Maintenance & Repair

  • Why is my truck running so bad? 3 Answers

    I own a 1988 Ford F150 with the 302. A while back it started running really shitty. Now I was wonderin' what it could be. When I start it, it idles horribly. It spits, sputters and even dies out every...

    1988 Ford F-150

    -

    Maintenance & Repair

  • why is my escape running lean 4 Answers

    I had a po1136 code, running rough at idle and stalling, checked intake for leaks, and vacuum leaks as well, after repeating intake cat ran better but now I'm getting po1131 & po1151 with a misfir...

    2001 Ford Escape XLT AWD

    -

    Maintenance & Repair

Shortcuts

Search Ford F-150 Questions

CarGurus Experts

  • #1
    OJ
    Reputation
    42,600
  • #2
    Gene Arnett
    Reputation
    16,040
  • #3
    Rowefast
    Reputation
    15,890
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
195 Great Deals out of 5,877 listings starting at $2,975
Used GMC Sierra 1500
128 Great Deals out of 6,516 listings starting at $3,975
Used Ford F-250 Super Duty
18 Great Deals out of 1,178 listings starting at $8,995
Used Toyota Tundra
31 Great Deals out of 1,361 listings starting at $6,255
Used Toyota Tacoma
46 Great Deals out of 1,074 listings starting at $9,995
Used Dodge RAM 1500
6 Great Deals out of 72 listings starting at $3,000
Used Ford Mustang
58 Great Deals out of 1,366 listings starting at $4,995
Used Ford Ranger
26 Great Deals out of 1,602 listings starting at $3,995
Used Chevrolet Silverado 2500HD
27 Great Deals out of 1,241 listings starting at $9,500
Used GMC Sierra 2500HD
21 Great Deals out of 1,519 listings starting at $5,500
Used Ford Explorer
75 Great Deals out of 2,091 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. Content will be removed if CarGurus becomes aware that it violates our policies.