Acceleration

Asked by Aj Jun 04, 2017 at 01:08 AM about the 1998 Ford F-150

Question type: Maintenance & Repair

I have a 98 Ford F-150 5.4 v8 4x4 and when I drive it I feel
like I'm going no where it's like it hesitates to go faster
than usual just outta no where and i usually do  
maintenance on it quite frequently just fixed one my coil
packs. I hooked my code scanner to it and nothing just
two o2 sensors only because I cut of two of the four cats I
had. So I don't know what it could be it has 161,000
anything helps.

3 Answers
3,640

Lonetech answered 7 years ago

If you can see on your scanner a contribution test. Put under load while holding brake and accelerating in gear sitting stationary. See if you are any misfired. Also look at fuel trim from left bank and right bank. If one side is showing more rich or lean. than the other suspect worn timing chain. Also can cause hesitation when accelerating

1 people found this helpful.
Mark helpful
3,640

Lonetech answered 7 years ago

If short term fuel trim is negative to bank 1 and positive to bank 2. Fuel trim should be pretty close to the same on each side. Of way off from each other. Suspect worn timing chain.

Mark helpful

Your Answer:

Related Questions

  • Acceleration 3 Answers

    I have a 98 Ford F-150 5.4 v8 4x4 and when I drive it I feel like I'm going no where it's like it hesitates to go faster than usual just outta no where and i usually do maintenance on it quite fre...

    1998 Ford F-150

    -

    Maintenance & Repair

  • Acceleration 1 Answer

    I have a 10 fx4 supercab 4x4 5.4 and when you floor it no matter the speed you are going it reeves high and takes forever to accelerate. Any ideas?

    2010 Ford F-150 FX4 SuperCab 4WD

    -

    Maintenance & Repair

  • Acceleration problems 1 Answer

    I have a 1999 F150 4wd with a 5.4l Triton. Trucks starts and runs, but when in gear no acceleration, no power. Already changed plugs, coil packs, fuel filter. Somebody please help????

    1999 Ford F-150

    -

    Maintenance & Repair

  • Rough acceleration 5 Answers

    I have a acceleration problem, idle is good, replaced the fuel pump and fuel filter about 2 months ago, when I press accelerator it vibrates and falls on its face, has 217,000 miles, don’t know th...

    1999 Ford F-150

    -

    Maintenance & Repair

  • Acceleration 1 Answer

    When I press the throttle, it accelerates properly, but the truck won't move. It's like the truck is in neutral. It shifts properly, Ive replaced the throttle position sensor, and I haven't reset t...

    1996 Ford F-150

    -

    Maintenance & Repair

F-150

Looking for a Used F-150 in your area?

CarGurus has 15,725 nationwide F-150 listings starting at $1,712.

Postal Code:

Shortcuts

Search Ford F-150 Questions

CarGurus Experts

  • #1
    OJ
    Reputation
    42,460
  • #2
    Gene Arnett
    Reputation
    16,040
  • #3
    Rowefast
    Reputation
    15,840
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
171 Great Deals out of 5,940 listings starting at $3,995
Used GMC Sierra 1500
128 Great Deals out of 6,854 listings starting at $3,975
Used Ford F-250 Super Duty
27 Great Deals out of 1,201 listings starting at $8,995
Used Toyota Tacoma
54 Great Deals out of 1,033 listings starting at $8,708
Used Dodge RAM 1500
4 Great Deals out of 80 listings starting at $4,000
Used Ford F-250
6 listings
Used Ford Ranger
15 Great Deals out of 1,439 listings starting at $2,888
Used Ford Mustang
49 Great Deals out of 1,268 listings starting at $4,995
Used Chevrolet Silverado 2500HD
20 Great Deals out of 1,146 listings starting at $8,999
Used Ford F-350 Super Duty
36 Great Deals out of 2,603 listings starting at $8,888
Used Ford Explorer
81 Great Deals out of 2,024 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.