i changed front pads and rotors and now i have thumping from passenger side. on 1999 Ford Explorer

i cleaned rotors prior to installing them.

Asked by for the 1999 Ford Explorer
recheck your work, sounds like one of the rotors is warpped
2 more answers
Replace both rotors.
Missing or incorrectly installed brake pad clips. Caliper bolts not tight. Does the steering wheel shake when braking?