What was found
NR 4 EGT INOP, NR 4 EGT 870 DEG ON CLIMBOUT 3000 FT. N1 89 PERCENT, ALL OTHER PARAMETERS NORMAL. REMOVED AND REPLACED EGT INDICATOR, LEFT AND RIGHT HARNESS IAW M/M 72-20-4. PERFORMED PWR ASSURANCE RUN IAW EWWA RUN UP HANDBOOK PG 48, PER DYNAMIC RIG ON VSV IAW M/M 75-32 -00. TURNED 3 FLATS CRW EGT WITHIN LIMITS AT T/O PWR IAW EWA RUN UP HANDBOOK PG 48.