What was found
DFW - FLT 1389 - DURING TAKEOFF DFW, LT ENGINE SLOW TO SPOOL. AT LEVEL FLIGHT 22,000 FEET, LT EPR, N1 AND N2 STARTED FLUCTUATING. ENGINE WENT TO IDLE FOR A FEW SECONDS AND THEN STARTED OPERATING NORMALLY. AIRCRAFT RETURNED TO DFW AND LANDED WITHOUT INCIDENT. REPLACED LEFT ENGINE FUEL PUMP AND FUEL CONTROL. LEAK CHECKED WITH NO DEFECTS FOUND. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)