What was found
NR 1 ENGINE OVERHEAT LIGHT ILLUMINATED AFTER ENGINE START THEN WENT OUT CALLED MC CONTINUED TAXI WITH LIGHT OUT TWO MINUTES LATER NR 1 ENGINE OVERHEAT LIGHT ILLUMINATED AGAIN. ACFT GROUNDED. ACCOMPLISHED TASK 26-11-00-710-801 AFTER COOL AND OPENED BOTH ENG COWL AND THRUST REVERSER COWLS. LIGHT ON NR 1 OVERHEAT EXTINGUISHED AND TEST NORMAL. RAN ENGINE, NO OVERHEAT LIGHT ILLUMINATED. POS AND BITE CHECKED GOOD. PERFORMED FIM TASK 26-10-00-810-805, RESISTANCE OF A AND B LOOPS ON NR 1 ENG GOOD. NO FAULTS FOUND. INSPECTED DUCTS AND DETECTION LOOPS IN NR 1 ENG NO DISCREPANCIES NOTED.