Here is an update. I took apart the right side brakes and cleaned off the rotor. There was some black stuff on the rag but it did not seem oily. The caliper slides freely. Reassembled and took it for a ride and felt the same pulsing when turning right. I drove it around for several more days. One thing I did prior to the brake job a few days earlier was to rotate the tires front to back. I think that what I am feeling is the tire skidding, sort of like the feeling you get when it is in 4wd and you turn on dry pavement, but not that bad. On wet pavement I don't feel it. I do not think that it had anything to do with the brake job. after all. The tire tread is getting low and uneven.
Thanks to all who responded. I guess there is a lesson to be learned here and that is to retrace your steps when something does not work out as planned.