What was found
CREW REPORTED THE NR 2 ENGINE SURGED DURING CLIMBOUT, TORQUE BETWEEN 78.5 TO 81.5. DECLARED AN EMERGENCY AND PREFORMED AN OVERWEIGHT LANDING. THE ACFT REMOVED FROM SERVICE. PERFORMED ERU GROUND RUN UP ON NR 2 ENGINE. OPS CHECKED GOOD, NO SURGING NOTED IAW JIC 72-00-00-ERU-10040. COMPLIED WITH ENGINE TURBINE WASH PROCEDURES IAW EO E2-7200-008R5. PERFORMED ERU GROUND RUN UP ON NR 2 ENGINE. OPS CHECKED GOOD, NO SURGING NOTED IAW JIC 72-00-00-ERU-10040. CHECK FIRE WALL CONNECTOR, FOUND ALL FOUR ENGING TO AIRFRAME HARNESSES LOOSE AND BACK SHELLS ALSO LOOSE AND NOT SECURED. RESECURED ALL FIRE WALL CONNECTORS IAW AMM 72-00-00 AND SAFETY WIRED CONNECTOR IAW SPM 20-21-18 AND CLOSE THE AFT COWLS IAW AMM 72-00-00. THE ACFT WAS RETURNED TO SERVICE.