What was found
FLT 581, HPN-PBI, DURING DESCENT WITH THRUST LEVERS AT IDLE APPROX 11,000 FT, GOT A ELEV THR COMP FAIL. COMPLIED WITH THE QRH BUT MSG REMAINED STILL DESCENDING THROUGH APPROX 9,000 FT. GOT AN ENG 2 FAIL MSG (THRUST AT IDLE), COMPLIED WITH QRH AND WERE ABLE TO RELIGHT ENG. ENGINE REMAINED OPERABLE THROUGHOUT LANDING (NORMAL/0) AND TO GATE. ACCOMPLISHED ESM 72-00-00. FAULT ISOLATION 008, REMOVED AND REPLACED NR 2 ENGINE FADEC IAW CF34-10E EMM 73-00-00-800-812. ALL OPS OK.