What was found
RT ENGINE FLUCUATION WAS ONLY AT GROUND IDLE. ALL OTHER POWER SETTINGS NORMAL INDICATIONS IN ALL REGIMES. ACCOMPLISHED FIM TASK 73-21 FAULT TREE 816. NO FAULT FOUND. CONSTANT 28VDC READING, R & R FUEL PUMP IAW AMM 73-11-01. REPLACED MEC IAW MM 73-21-01, ADJUSTED MEC IAW MM 73-21-01. FUEL PUMP OPS AND LEAK CHECKED GOOD. INSTALLED CONTROL BOX FOR CONTROL CABLE (MEC) AMM 76-11-02, INSTALLED ECCM ACTUATOR (MEC) AMM 76-11-04. OPS AND LEAK CHECKED GOOD IAW MM 71-00-00.