What was found
FOUND NR 2 ENGINE ECONOMIC FAULT 77-20872. THE TOP LEFT EGT SIGNAL IS OUT OF RANGE. ACFT GROUNDED. COMPLETED T/C 78273000. VERIFIED TWO FAULTS, IN RECENT FAULTS 77-20872 TOP LEFT EGT SIGNAL OUT OR RANGE AND 73-313172 UPPER EGT SECTORS READ HIGH. PERFORMED NR 2 ENGINE EGT INDICATION TROUBLESHOOTING IAW AMM 77-21-00, PB 201. S1-99.82 S2-46.50 S3 47.12 S4-339.87. COMPLETED EGT CONNECTOR CLEANING AND VALUES ARE S1-45.00 S2-25.20 S3-24.87 S4-45.50. CHECKS WITHIN LIMITS. PERFORMED ENGINE RUN AND EEC BITE VERIFIED ALL EGT VALUES NR 2 ENGINE WITHIN LIMITS DURING RUN, NO FAULTS AFTER RUN. REF AMM 77-21-00-20.