guess mine's kinda been a lemon, it's a 98 OHV Sport 4wd
the day I got mine I had the 4wd and 4lo lights flashing at me and not working, that was around $300 for a new relay I think (luckily the place I got it from footed the bill)
I've had to replace 2 oxygen sensors so far, that's regular maintenance but still $100, have one to go
I've had the O/D OFF light flash, that was around $800 for a new valve body, the gasket went bad and metal filiings blocked off stuff inside
The A/C has never really worked well, I've had it refilled twice and they swear there's no leak, something I"ll hafta fix this summer
Now my 4 LO won't engage, if I put it in 4 LO it'll stay in 4 hi and display 4 lo, but the comp won't tell it to disengage till I disconnect the battery, I'm pretty sure it's my shift motor on my transfer case, if I take it somewhere it'll be around $300. Since u don't need the shift motor to go into 4 HI I'm going to leave it untill I get some xtra time and money(basically never).
All this in under a year, and from 45,000-62,000 miles. When it works I love it, better gas mileage than my previous F-150, lotsa neat features inside, and a very good vehicle to have in the winter. If I had it to do over again though I woulda accepted the worse gas mileage and got a full size extended cab, or woulda gone w/ a V8 AWD since I currently don't have low range anyway, and don't need it.
O, and the rear wiper has never worked worth a darn, I bent it so it'd hit the glass, but that lasted about a week and now it's worse than it was b4.