What was found
CLE - FLT 1204 - ON CLIMB-OUT FROM CLE, AT 500 FEET ABOVE GROUND LEVEL, THE AUTO THROTTLE KICKED OFF AND THE NR 2 ENGINE THRUST WENT TO FIREWALL. THE NR 2 ENGINE N2 INDICATED 100 PERCENT AND THE N1 WAS AT LEAST 10 PERCENT LESS THAN NR 1 ENGINE N1. FLIGHT RETURNED TO FIELD TO CLE. ON DOWNWIND LEVEL FLIGHT, ALL ENGINE INDICATIONS WERE NORMAL BUT ON FINAL APPROACH THE NR 2 ENGINE BEGAN POWER FLUCTUATING WITH AUTO THROTTLE OFF. FLIGHT LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE REMOVED AND REPLACED THE NR 2 ENGINE VARIABLE BLEED VALVE FUEL GEAR MOTOR PER MM 75-32-02. OPS CHECK AND LEAK CHECK GOOD. OPERATED BOTH ENGINES AT POWER. ALL PARAMETERS NORMAL AND MATCHED. (M)