At 40 - 50 mph. My f-150 Larrit. 4.6. Starts to jerk .........sputter. The rpms stay the same. So I'm leaning towards spark plugs or coil pack any chance of trams problems ?

Asked by Jimmywp2316wp Aug 04, 2014 at 03:16 PM about the 2003 Ford F-150 Lariat Crew Cab SB

Question type: Maintenance & Repair

Any chance of any problems in transmission

2 Answers

gurumechanic answered 9 years ago

This is a common issue with the Ford 4.6L . The problem is most likely the spark plugs and COP coils. I purchased the Accel COP coils from Summit Racing. I bought an 8 pack of the Accel coils from Summit for $170.00 and they work great! Most other vendors wanted around $400.00 for the same thing. When installing, be sure to use anti-seize on the spark plug threads, and a dab of dielectric grease inside the spark plug boots.

Mark helpful

Your Answer:

Related Questions

Shortcuts

Search Ford F-150 Questions

CarGurus Experts

  • #1
    OJ
    Reputation
    41,830
  • #2
    Gene Arnett
    Reputation
    15,990
  • #3
    Rowefast
    Reputation
    15,480
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
195 Great Deals out of 7,896 listings starting at $3,000
Used GMC Sierra 1500
116 Great Deals out of 8,187 listings starting at $3,000
Used Toyota Tundra
32 Great Deals out of 966 listings starting at $10,698
Used Ford F-250 Super Duty
29 Great Deals out of 795 listings starting at $2,890
Used Toyota Tacoma
43 Great Deals out of 741 listings starting at $9,975
Used Dodge RAM 1500
90 listings starting at $2,500
Used Ford Mustang
36 Great Deals out of 1,623 listings starting at $8,995
Used Ford Ranger
22 Great Deals out of 712 listings starting at $8,999
Used Chevrolet Silverado 2500HD
32 Great Deals out of 1,678 listings starting at $3,000
Used Ford Explorer
51 Great Deals out of 2,017 listings starting at $6,990
Used Jeep Wrangler
133 Great Deals out of 5,957 listings starting at $8,990
Used Chevrolet Colorado
40 Great Deals out of 1,203 listings starting at $2,499
Used Toyota 4Runner
27 Great Deals out of 553 listings starting at $7,700

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.