Had a 01 excursion with a 5.4 3v. Had to heli coil 2 plug holes, drill out 6 broken exhaust studs, replaced the cam phasers on both sides, timing chain and timing chain tensioners. That one vehicle turned me away from ford's for ever. Unless it's a original style 5.0, 5.8, 4.9, or a 7.3 turbo (not idi) I won't own it. I loved Ford trucks but the post 96 trucks and SUV's are nothing but problems. Hope you the best of luck on your 5.4. mine cost me over $1,000 to repair and when everything worked and was repaired it was an ok suv besides the typical Ford electrical gremlins and a leaky windshield that fried the computer and I then said f this and scrapped it.