What was found
DIVERTED, WHILE IN CRUISE, ENGINE EPR MODE 1 FAULTED ENGINE SYSTEM 1, FAULTED AUTO THROTTLE MESSAGE, SWITCHED TO N1 MODE. COULD MAINTAIN PARTIAL POWER ENGINE 1 IN CLIMB DETENT N1 NO GREATER THAN 79 PERCENT. N1 ENGINE 1 AVAILABLE EGT ENGINE FOUND TO BE 100-200 DEGREES WARMER THAN ENGINE 2 EPR MODE MESSAGE WAS FIRST NOTED. R & R ELECTRONIC ENGINE CONTROL IAW 73-22-34. ACCOMPLISHED TEST II HIGH POWER ASSURANCE RUN TEST NORMAL.