What was found
#1 ENGINE FIRE DETECT INOP IN SYSTEM A OVERHEAT. GROUNDED - YES. TESTED ENGINE FIRE DETECTION SYSTEM, FOUND #1 ENGINE WAS FAILING. PERFORMED BITE PROCEDURE FOR ENGINE FIRE DETECTION, #1 ENGINE CHANNEL A SHOWED TOP CORE LOOP FAILING. FOLLOWED BOEING B737-800 FIM 26-10-00 FOR RIGHT CORE FIRE DET. FOUND AN OPEN WHILE CHECKING RESISTANCE, FOUND FLUCTUATION WHILE MOVING A CORE LOOP. REMOVED AND REPLACED TOP RIGHT CORE ENGINE FIRE DETECTION LOOP FOR #1 ENGINE IN REFERENCE WITH B737-800 AMM 26-11-01, OPS CHECK FAILED. CONTINUED TROUBLESHOOTING, FOUND RING TERMINAL ON BOTTOM CORE FIRE DETECTION FIRE LOOP, REMOVED AND REPLACED RING TERMINAL FOR HARNESS IN REFERENCE WITH MEGGITT SAFTEY SYSTEMS 26-10-87, OPS CHECK GOOD.