I'm looking to buy a used truck. I find a lot of 5.4 4x4 in my price range in this year range. I know the plug issue and the cam phaser issues but any other concerns? I don't drive much since I work from home but I do want something I can own for several years with no expected mechanical issues.
I have a 2007 5.4 3V with just over 133K on it. I had the plugs changed at about 108K. I also switched form the "spec" oil of 5W-20 to 5W30 my phasers are quiet with fresh 5W30 and when oil change time arrives they make a little noise. But have since I bought the truck with 55K on it.
Other than that service the transmission (and transfer case since you are looking at a 4x4). I had to add some friction modifier to my differential about 2 years ago. It was starting to chatter on slow turns. Adding the modifier fixed that. It's been gas and oil and tires and just maintenance stuff. Runs like a clock.
It's a turd towing my camper in the hills, but that's a subjective opinion. It has taken every thing I've put it through without fail. It has always got me where I was going and back home. Even when I ran it at 65mph uphill for 5-10 blasts for an hour in second gear through the PA mountains coming back from NJ with the camper. I'll tell you turning 4000 rpm for 7-8 minutes at a time feels like an eternity. It did it without issue.
I have an ‘08 f-150 with 212,000 miles. 5.4 triton, 4x4 and tow package rated to 10,000lbs. Ive pulled a lot of cars on different kinds of trailers and it usually doesn't feel like theres anything back there. Its a great truck. Radiator tank cracked at 200k miles and starter died at 210k miles other than that its been great. I used the 4x4 low once at orlando speed world. Their tech in is out in the grass. We came off a week of rain. I was pulling the racecar with trailer across the sloshy muddy grass and wheels started spinning. Thru it in 4 low and yanked it right out. Its just an old base model XL fleet truck and it does everything i need it to do and is pretty dang reliable. Super cold a/c as well.
My old gal bailed me out me this morning. My daily '13 Focus commuting car battery crapped out and wouldn't even turn over this morning. No problem since the big turd fires every time. Had to scrape frost off the windows, but ol' reliable was there for me. That truck has never let me down no matter how many times I have cursed it.