I have a 99 F150 4.6L auto with 4 wheel disc brakes and over 230000 miles on it. My kid lost a front wheel bearing and drove it another hundred miles trying to find someone to make repairs. I finally had to go tow it home. Replaced the spindle, rotor, caliper, caliper bracket, sensor, etc. However, when I drive it over 15 mph the brakes self apply until I slow to 15 mph. I have compared parts, switched parts, measured distance, etc. with no change. I pulled the ABS fuse so that I could drive it the 30 miles to town and the brakes still apply. I disconnected the front sensors AND the sensors on the Master cylinder and they still apply (rear brakes). Sounds like I need to replace the ABS module from the discussions posted. However, the ABS light is not illuminated on the dash. (Does light up when I unplug things.) Should I disconnect the rear ABS sensor as well so that I can drive it to town to get it checked out? Any suggestions to save me $400 would be appreciated.

 

Why would faulty ABS cause the brakes to self apply? The brakes will work fine with a faulty or none functioning ABS they are made that way.
If you cut all power to the ABS system it is impossible for the ABS to do anything. One thing, the ABS module fuse on my truck also controls the brake lights so you will have no brake lights so be careful.
Sounds like a mechanical issue to me.
You can take it to Midas or somewhere for a "free brake inspection" and let them tell you. I would guess a part is not working right on the rear brakes.
Not trying to make you worry but the transmission or suspension could be the problem. See if the brakes do that when you coast down a hill in neutral above 15 MPH.
You didn't say why you think it is the brakes.

 

Let me try this one more time.

Thanks Pickups rule.

I thought it was the brakes because everything worked fine until the wheel bearing issue.
I tried coasting downhill a couple of times as you suggested. No braking problem. Also found that I could accelerate out of the braking issue. Took it out on the highway. Accelerated/shifted fine until I hit 55. Then it shifted out of gear and the engine raced until I either slowed down to around 45 and/or slowed a bit then kicked it into passing gear. Repeated this a couple of times. Good news is that the brakes quit being applied at the slower speed. They don't seem to self apply at all now.
So, am I losing the tranny or is there something I should check out?

 

Sounds like a transmission shift problem or a torque convertor issue.
There are shift solenoids in that transmission than can be replaced or sometimes transmission wiring connection problems cause problems.
I had a similar problem with my Crown Vic. It would only shift once and later when I put it in reverse it would shut off the engine. Overall the car had no power and for a Crown Vic that is unheard of. What I did was take it to the Ford place for the shutting off problem and for an oil change and safety check. They suspected the transmission but said they would need to pull the pan to look for metal in the filter. I didn't ahve the money at the time so I suffered. About 8 months later it was so bad I didn't even think I would make it the 5 miles to the Ford dealership. Sure enough, they pulled the transmission and it was full of metal parts. I got a new Ford transmission with 3 year warranty installed for $ 2,300 which I thought was not all that bad. Turns out by that time it was locked into first gear. Most dealerships will look at a problem for a diagnostic fee of about $90.00 which can apply to the repair. I would take it to the experts because if it is something that needs to be fixed now, it could get bad enough to wipe out the transmission. Any transmission place or good mechanic should be able to check out the shift solenoids and connections.
Good luck, you know it could be something minor.