I have a 98 F150 4x4 with 111000 miles on her and just recently I've been hearing a squeal from the right front wheel. I pulled the brake off to make sure it wasn't dragging and all seems to be fine. It starts after I've driven it for a mile or two and can only be heard once going ten mph or so. Bearing? CV? Any suggestions would be appreciated. Thanks.

 

My 97 F150 has 100,000 on it right now and the front end started to squeak around 38,000. I took it in to Ford and they couldn't find anything wrong with the front end. I ended up replacing the drive shafts in front and the problem went away.
Try taking off your front tires. Then rotate the front hub assembly. They should rotate freely if you have the vehicle in park and the 4 wheel drive off or hubs unlocked if you have those. The front drive shaft should spin with the rotor. Look to see if the front driveshaft is turning smoothly. If it's crunching and gringing, your CV joints maybe dried out. If they have been like this for awhile, you will have to change them.
Also check to see if the CV boot has a crack or is ripped. If water gets in, it tends to wash the grease out. What doesn't help is the fact that your front drive shafts are always spinning, so if you do have a hole in the boot, all the grease would be forced out of the joint.
Depending on how you drive your truck determins how long or how well it's going to stand up. If you do alot of off-roading, you will tend to have more problems and should be more careful about maintnance.
Good luck

 

jack up the wheel and spin it, spray some wd40 on the rubber seal areas you think are suspect. if it stops you have found it, will need to replace it to stop noise. seals dry out over time and typically are source of low revolution noise, bearings and such have tendancy to make noise at all speeds.