What was found
ON TAKEOFF FROM KLRD TO KTOL NR 1 EGT FLUCUATED WILDLY BETWEEN 700 DEGREES AND OFF SCALE HIGH (1000). BOTH ANALOG AND DIGITAL EGT FOLLOWED THROTTLE BUT CONTINUED TO FLUCTUATE ERRATICALLY TO 1000 DEGREES. FUEL FLOW FLUCTUATES 150-200 LBS PRECAUTIONARY ENGINE SHUTDOWN PERFORMED AT 0404Z OIL PRESS 1LB AT 28 N1. N1 AND N2 APPEARED NORMAL, ALL OTHER ENGINE PARAMETERS NORMAL. CREW CONTINUED FLIGHT. MAINTENANCE RAN NR 1 ENG IAW ATI ERH 70.01.01 AND PERFORMED POWER ASSURANCE TEST IAW ATI ERH 91.01.03. NO FLUCUTATION IN ENGINE PARAMETERS NOTED. PIGTAIL FOR NR 1 ENGINE WAS REMOVED AND REPLACED PER ALL APPLICABLE MANUALS. AIRCRAFT WAS RETURNED TO SERVICE.