My chains started to rattle at 120k or so (SOHC). I drove it to 202k before I decided to take care of it. Engine was still strong, but it sounded like it had marbles in it. Pulled the motor, and it was toast. Tensioner was fully deployed, plastic guides were broken. Surprised the chain didn’t jump teeth.
You can replace the timing parts, but then you’ve still got a tired motor. I swapped in a long block out of a wrecked 2012 Ranger 4x4. Engine had 36k on it. Paid about $1000 from LKQ. Runs great.
My 5R55E trans ‘went’ at 140k. Torque converter wasn’t locking up, and I had a broken band. Had it rebuilt for $1800. They did the Ford updates. I have 160k on it since the rebuild without a hiccup. Trucklet has 298,000 and going strong as hell.
I love these things. I just bought another—a 5.0L. They’re simple, reliable, easy to work on (well...mostly).