Went to Aldis, left there and brakes started to lock up, just stopped in middle of road. I went to side of road to avoid accident. I haven't driven it since.

sometimes the front passanger wheel locks up

Never know when this problem is going to happen. have had the problem looked at and no one can find it. this scares me when it happens. Right passenger side wheel. Locks up, grinds only lasts a few seconds. Happens in the rain, snow, dry weather. Sometimes when I apply the brakes and am turning and sometimes when driving straight.. Need help finding out what the problem is. Can't take the car to a lot of places because of income. Please help.