What was found
APPROX HALF WAY INTO T/O ROLL NR 1 ENG WAS CYCLING .5 PERCENT. DURING CLIMBOUT CYCLING INCREASED TO 3 TO 4 PERCENT MOSTLY LESS THAN THE COMMANDED POSITION. ALL ENGINE INSTRUMENTS WERE FOLLOWING ENGINE CYCLING AND THE N1 COMMAND SECTOR WAS RAPIDLY SHOWING THE 3 TO 4 PERCENT CHANGES WITH AUTO THROTTLES OFF. ENG SURGE QRC/QRH RAN. AFTER LEVELING AT 9000FT AS THE POWER REDUCED ALL SURGING STOPPED AND SUBSEQUENT CLIMB AND CONT POWER SETTING HAD NO SURGING. NR 1 ENGINE BITE CHECK HAS FAULT CODE 73 30901 "T12 SIGNALS DISAGREE". PERFORMED FIM TASK 73 26 TASK 805. INSPECTED T12 SENSOR FOUND BONDING STRAP LOOSE. REMOVED & REPLACED T12 SENSOR PER AMM73 21 05. OPS CHECKS OK. VERIFICATION FLIGHT SUCCESSFUL.