What was found
#1 ENG SHOWING EGT EXCEEDANCE. GROUNDED - YES. VERIFIED ENG #1 EXCEEDANCE REF B737-900 AMM 71-00-00-740-801. ACCOMP EEC BITE ON ENG #1 REF B737-900 FIM 73-00 TASK 801. RECORDED BOTTOM LEFT EGT SIGNAL OUT OF RANGE LAST 10 FLT LEGS. ACCOMP FIM 77-21 TASK 803 TEMPS WITHIN RANGE. ACCOMPLISHED T49.5 PROBE AND EGT SYS INSP REF AMM 77-21-01-200-801-F00. #3 PROBE RESISTANCE OUT OF LIMITS. ALSO RECORDED HIGH RESISTANCE PINS B- & U- J10 THROUGH #3 EGT PROBE. ACCOMP EGT CONNECTOR CLEAN REF AMM 77-21-00-140-801 ALL RESISTANCE VALUES NOW WITHIN RANGE. RMVD & RPLCD # 3 EGT PROBE PRECAUTIONARY REF AMM 77-21-01. GROUND VERIFICATION SUCCESSFUL.