As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF FROM MIA AT CLIMB, THRUST SETTING THE CREW NOTICED A VIBRATION AND NR 1 ENGINE EPR WAS FLUCTUATING BETWEEN 1.75 AND 1.5 FUEL FLOW AND N2 FLUCTUATING. WHEN THRUST REDUCED THE VIBRATION WAS MINIMAL. FLIGHT RETURNED TO MIA. REMOVED AND REPLACED P AND D VALVE AND DRAINED MOISTURE TRAP.