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  1. 2.7 Ecoboost F150
    Tuned 2018 with SCT Tuner running BCB 93 Octane Performance tune. Mods: K&N Cold Air Filter, CVF Titan intercooler, Turbosmart Supersonic BOV, J&L Oil Separator Catch Can with 93,000 miles. Started having shudder issues a few months ago. I ended up replacing all coils and plugs with new...
  2. F150 Ecoboost Problems
    Hey y’all, I’m a frequent passerby here, but out of desperation with a unique situation, this is my first time actually posting. The patient is a very beloved first truck I inherited a few years back after my grandfathers passing. He had just bought it new and began modding it before he got sick...
  3. F150 Ecoboost Problems
    I have a 2012 f150 3.5 ecoboost with 145,000 miles on it. Was having slight issue with the occasional misfire around 135,000 miles. And changed the spark plugs. Didn’t change but wasn’t having the issue unless under load and rare at that. Past week noticed what I think is an exhaust leak and...
  4. F150 Ecoboost Problems
    So I got a new truck, was very excited and happy. Not even 24 hours later I wanted to see what she could do so I sent it off the intersection. It'll misfire at high rpms and load, as if I was passing someone maybe, it misfires, shakes for a min or even a few seconds, and then the shake goes away...
  5. Introductions
    Hello! I am new to this forum but I came because I need help with my truck. I drive a 2013 F-150 with a 3.5 ecoboost and recently I have had a misfire issue. I pulled the P0305 code which I am aware referrs to cylinder #5. I just replaced all 6 spark plugs with Motorcraft plugs and I got a new...
  6. 2021+ Ford F150 Powerboost
    Help. 2016 3.5l 140000miles. I've developed what feels like a misfire. It's only when accelerating or under heavy load. If I keep my foot in it then it will go into limp mode but if I ease up it drives smooth. I've changed plugs several times and each time there are usually 2 but always at...
  7. 2nd Gen F150 Ecoboost
    Need some help figuring out what’s going on from this great community. I have 2015 3.5 EB SCREW with 122k miles. I get a shudder with a corresponding small rise (50-100)in RPM usually around 1000-2000 RPM when under load (either a small hill or towing). It happens most often in 6th gear but can...
  8. F150 Ecoboost Problems
    I have a 2015 3.5L Ecoboost that currently has 115,000 miles on it. So I have a few issues going on that I am pretty frustrated about. About a month ago I had my truck in to my mechanic because my fuel pump and module went out, but at the time I also had both sides of the exhaust manifold...
  9. F150 Ecoboost Problems
    I bought a used 2012 F150 platinum 3.5 ecoboost a few months ago. Has run perfectly and performed very well up until now. I noticed when I was passing someone it felt like my engine was misfiring. The check engine light started flashing and I slowed down to about 1.5 to 2 rpm and light went off...
  10. F150 Ecoboost Problems
    My 2013 3.5 ecoboost has had yet another misfire issue while towing my boat. This happened twice previously, Feb 2019 55k miles and garage had to replace plugs and coils, Same thing in Mar 2020, 65k Plugs and coils replaced again. Now I am taking it back in to the shop a 3rd time in less than 2...
  11. F150 Ecoboost Problems
    I have a 2013 3.5 EB 6.5 bed 3.55 gears 122K 34" tires and leveling kit Problem: Periodic rough idle. Sometimes the truck idles very low and sometimes it idles very rough. When accelerating at 30-40 mph uphill or when driving slowly through town the truck shakes and it feels like I'm driving...
  12. F150 Ecoboost Maintenance
    Have a used 2012 3.5 Ecoboost crew cab with 60,300 miles. Purchased 6 mos. ago with 54,000 miles. Have a 1-year bumper-to-bumper warranty and a 2-year/100,000-year engine warranty. I have experienced the dreaded misfire shutter and loss of power (CAC issue). I am taking the truck next week...
  13. F150 Ecoboost Problems
    3.5L GTDI - INTERMITTENT STUMBLE/MISFIRE ON ACCELERATIONFROM HIGHWAY CRUISE IN HUMID OR DAMP CONDITIONS TSB 14-0017 link to it below https://ford.oemdtc.com/TSB/14-0017.pdf "Reprogram the PCM to the latest calibration level using IDS release...
  14. F150 Ecoboost Problems
    Hello all, I have a 2013 model f150 ecoboost that I have recently purchased a couple weeks back and had the dreaded miss that is ever so common. I ended up replacing my plugs and boots with Autolite XP5363 (gapped at .030) and Napa brand plug boots because I didn't want to spend the $$ on...
  15. F150 Ecoboost Problems
    Ok, so I have read through the pages here and haven't seen anything on what I believe to be the same as my issue. It happened on Monday, we finally have some good weather and I wanted to listen to the turbos spool, so on a couple of accelerations I noticed at about 5,000 rpm that she would...
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