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  1. GDIMammothTank

    2012 gas smell and drop in economy.

    I was smacking my socket wrench, breaker bar will certainly help
  2. GDIMammothTank

    2012 gas smell and drop in economy.

    It’s possible, I hear a tiny tick when it starts. Could be an exhaust leak and it stops from it expanding and closing gap. Thank you for the idea!
  3. GDIMammothTank

    2012 gas smell and drop in economy.

    What I kept reading online is if you can do the first 6 you can do the last 2. Let me warn you, you will want a swivel, and a place you can curse. The fuel smell came back so… oof. No CEL and I didn’t use a torque wrench to put them in but it was smooth otherwise. I’m dreading doing the driver...
  4. GDIMammothTank

    2012 gas smell and drop in economy.

    Images 1 and 2 are one spark plug, 3 and 4 another.
  5. GDIMammothTank

    2012 gas smell and drop in economy.

    Plugs were a little dirty, worth the $125? Idk yet. First start up had no smell of fuel though…. For now….
  6. GDIMammothTank

    2012 gas smell and drop in economy.

    Getting a yummy, not good though, fuel smell when I start the 2012 5.4l Triton up. Going to replace spark plugs as a precaution and hope that does it. Also dropped in mpg from around 14 in the city to barely 11. Just hit 203,940 and didn’t see the last time plugs were changed on the carfax so...
  7. GDIMammothTank

    Got home with an engine code. 2012 Expy

    Sweet, thank you. My wife and I drive them almost daily. The F150 gets driven maybe 3 days a week sometimes and is still fine. It has a Motocraft AGM battery
  8. GDIMammothTank

    Got home with an engine code. 2012 Expy

    Does AGM (I think that’s the battery type in my new F150) have a better survival rate in harsh swings of weather? I sit 2-5 times a week for an hour in the Expedition watching Bluey on the DVD player in it with my kids while waiting to pick up from school or dr appointments. Maybe this...
  9. GDIMammothTank

    Got home with an engine code. 2012 Expy

    It’s the battery. Checked this morning and it’s at 12.1 volts. Hooked jump box back up and it purred for 30 seconds and I shut it off. Who would have thought. Lol
  10. GDIMammothTank

    Got home with an engine code. 2012 Expy

    Update, kept seeing that a bad battery could possssssibly be a little bit possibly causing the problem. So I hooked it up to a jump pack and the CEL was gone and it sounded great. Maybe I’ll try again in the morning. Hopefully it is just the battery.
  11. GDIMammothTank

    Got home with an engine code. 2012 Expy

    Another happy return home. 5.4l Triton with 197,000 miles has P0365 and P0369. Rough idle, wants to die. Sounds fine and has plenty of power when driving just sounds like cam phasers and death at idle until it actually dies. I’m going to scour the internet but figured I’d ask in case anyone...
  12. GDIMammothTank

    Procharging the 5.4

    Anyone have any experience on procharging their Expy? I see a couple kits that are pretty pricey but I mean it would be a looooootttttt of fun. I am thinking new cams and the pro charger with a tuner should all be good? Having a hard time finding anything on Expeditions.
  13. GDIMammothTank

    2017 Max Tire Size?

    I think your biggest worry is going to be if you are lifted at all or not. I have the premium wheels (I think they are 20s) and was thinking about putting the 35s on from my F150 but they are wayyyyyy too big. Also think about tire wall height when at full crank. No rubbing now is always better...
  14. GDIMammothTank

    Real world MPG results

    Wish I could tell you what gear is in it. It is 2wd. I mean maybe it's the E88? I have had that stuff in my tank for a little over a month and it just loves it. Lots of power if you big toe the gas out of a parking spot. Sitting at 17.1 average right now. I just swapped the passenger side VCT...
  15. GDIMammothTank

    Real world MPG results

    Recently did a trip from El Paso Texas to Alamogordo NM and got 21 both directions. Bone stock 2012 King Ranch 5.4l triton. Maybe it's the E88 eco Maverick gas? City is dropping pretty far but sitting at 17.3 for the last week or so.
  16. GDIMammothTank

    Low idle 2012 Expedition 5.4L

    I've been watching via obd2. Looks all the same until yesterday, of course when it was not on obd2, and was wanting to die somewhere around 300rpm in gear at a light. Still no codes. Maybe it's one of those cars that like to give heart attacks lol
  17. GDIMammothTank

    P0015 on 2012 Expy with 5.4 Triton

    I just don't want to pay $300 to be told it has a vacuum leak lol
  18. GDIMammothTank

    Alarming issues

    I found out the hard way last night that opening the hood from the half latched position with the vehicle alarm on that it will set it off. Maybe check there, total shot in the dark though
  19. GDIMammothTank

    P0015 on 2012 Expy with 5.4 Triton

    They wanted to make an appointment. It had a pending code for crankshaft position with camshaft B but it never came as a stored code. Still idling between 470 and 520 when in gear at a light and like 640 in park.
  20. GDIMammothTank

    Low idle 2012 Expedition 5.4L

    No codes yet. Recently had entire passenger side head rebuilt and new VCT solenoid on passenger side replaced. 520-530rpm in gear. 570-620rpm in park and pretty rough.
  21. GDIMammothTank

    P0015 on 2012 Expy with 5.4 Triton

    I lied. Fired it up again in the parking lot and right back to it.
  22. GDIMammothTank

    P0015 on 2012 Expy with 5.4 Triton

    Put a new VCT in last night. Fixed the rough idle while in gear. Gotta make a new thread post for super low idle now though lol. Sitting somewhere around 470-500 while in gear and 520ish while in park. Just keeps on going lol
  23. GDIMammothTank

    P0015 on 2012 Expy with 5.4 Triton

    The RO is the completed repair for #3 intake valve. I bought the Expy and asked why they had it in reconditioning and wouldn't tell me why and when I turned it on the next morning it was the same CEL they had in recon. They didn't want to but they paid for the repair. I am wondering if it is...
  24. GDIMammothTank

    P0015 on 2012 Expy with 5.4 Triton

    I got a P0015 on my 2012 Expy 5.4L today. Idling really rough but revvs up on it's own and is smooth. Hoping it's something with the fuel and not directly engine related. Just got it back from the dealer around a week ago for them fixing a stuck valve on the passenger side head. I attached a...
  25. GDIMammothTank

    Real world MPG results

    Stock 2012 King Ranch Expedition 5.4 from El Paso Texas to Las Vegas Nevada got 18.8 for the whole trip of about 715 miles. Had all of our luggage in the back with the 60 part of the seat folded. Highest it got was 20.1 on flat areas, 17.8 on the hills. Mostly around 77-85mph

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