What was found
NR 2 ENG N1 FLUCTUATION RAPIDLY FORM 91.2 TO 100.1 BETWEEN ABOUT 2500FT TO 6000FT ON CLIMBOUT, AUTOTHROTTLE WAS FOLLOWING. ALL OTHER ENGINE PARAMETERS APPEAR NORMAL. ABOVE 6KFT ALL NORMAL. NR 2 ENG EEC LOGGED FAULTS 73-30902-T12 SIGNALS DISAGREE 73-21702 ADIRU TAT DATA AND T12 SIGNAL DISAGREE 73 20812 T12 SIGNAL OUT OF RANGE. NR 1 ENGINE NO FAULTS LOGGED. NR 2 REMOVED T12 SENSOR IN REF 73-21-05-000-801-F00 AND REPLACED T12 SENSOR IN REF 73-21-05-400-801-F00. OPS CHECK NORMAL IN REF 73-21-00-700-804-F00. ACCOMPLISHED REPAIR CONFIRMATION PERFORMED HIGH POWER ENGINE RUN, OPS CHECK GOOD REF FIM 73-06-00-810-09.