What was found
DURING CLIMBOUT LT ITT READ UP TO 100 DEGREES LOWER THAN RH ENGINE (ALSO FLUCTUATED NUMEROUS TIMES) SET TORQUES, FUEL FLOW AND NG'S WERE DISPLAYING NORMAL INDICATIONS. AIR TURNBACK TO MSP. MAINTENANCE PERFORMED ITT FUNCTIONAL CHECK IAW TASK CARD 772001-1 OHMED YELLOW HARNESS, ALL CHECKS GOOD. CLEANED CANNON PLUG WP41 AT ECU. PERMANENTLY SWAPPED ITT INDICATORS FROM LEFT TO RIGHT, REMOVED AND REPLACED THERMOCOUPLE ASSEMBLY P/N 6058T28P01, S/N OFF 6BDA, S/N ON 60B6432E.