What was found
DIVERTED, DUE TO HEAVY VIBRATIONS FROM LT ENGINE IN CLIMB. REDUCED POWER TO IDLE AND VIBRATIONS REDUCED TO ACCEPTABLE LEVEL (DID NOT SHUTDOWN). INSPECTED CHIP DETECTOR AND OIL FILTER, NO DEFECTS NOTED REF AMM 79-21-00, INSPECTED ENGINE COWL, LP COMPRESSOR BLADES & EXHAUST SYS. NO DEFECTS NOTED REF MM 72-31-11 & 78-11-00. SWAPPED ENG VIB CONTROL BOXES NO HELP. RETURNED BOXES TO ORIGINAL CONFIG. R & R LT ENG AVM ACCELEROMETER AMM 77-31-01-4, NO HELP PERFORMED FAN BLADE LUBE, REF AMM 72-31-13-2. NO HELP PERFORMED WIRE SHAKE DOWN FROM LT ENG AVM ACC TO FIREWALL DISCONNECT CONNECTOR PLUG, AS1080 NR3. ABLE TO DUPLICATE HIGH VIB SIGNAL WITH ENGINE SHUTDOWN. PROBLEM AT CONNECTOR. RELEASED FOR SERVICE IAW MEL: 77-31-01-01-1.