What was found
NR 3 OIL TEMP ALERT, TEMP REACHED 162 DEGREES. RAN QRH, SHUTDOWN ENGINE AFTER 15 MINS IN CAUTION ZONE. TROUBLE SHOT IAW AMM 72-00-00-1/FIM 79-32-01. NO AIU FAULTS; NO FUEL AND/OR OIL CONTAMINATION. CHECKED MASTER CHIP DETECTOR PRECAUTIONARY; NO METAL NOTED. CHECKED OIL TEMP SENSOR. INDICATION SHOWED 82 DEGREES CENTIGRADE. SLAVED IN NEW SENSOR, SHOWED 27 DEGREES CENTIGRADE. R & R OIL TEMP SENSOR IAW AMM 79-32-01-2. OPS/LEAK CKD COMPARING NR 3 TEMPS TO NR 2 TEMPS DURING IDLE/LEAK CK. TEMPS NOMINAL AND CONSISTENT BETWEEN ENGINES. NO LEAKS NOTED.