What was found
ON CLIMB NR 2 EGT WAS 60 DEG HOTTER THAN NR 1 MAX EGT 910. ON CRUISE, NR 2 EGT WAS 35 - 45 DEG HOTTER THAN NR 1. ON DESCENT TO LANDING, EGTS WAS WITHIN 10 DEG OF EACH OTHER, ALL OTHER ENGINE INDICATIONS NORMAL, NO LIMITS EXCEEDED. GROUNDED - YES. NR 2 ENGINE EEC BITE TEST SHOWS FAULT MSG 77-20862 "BOTTOM LEFT EGT SIGNAL OUT OF RANGE". REMOVED & REPLACED NR 2 ENGINE LOWER LEFT EGT PROBE REF AMM 77-21-01. ACCOMPLISHED ENGINE RUN-UPS BOTH ENGINES REF AMM 71-00-00, OPS CK NORMAL. ALSO, RE-ACCOMPLISHED EEC TEST, NO FAULTS FOUND.