HI, I HAVE BEEN STRUGGLING WITH THIS NOISE FOR ABOUT 2 MONTHS NOW. TOOK IT TO MECHANIC SHOP A FEW TIMES FOR SAME ISSUE. FRONT ENGINE NOISE, REPLACED THE PULLEYS, DRIVE BELT, TENSIONER, WATER PUMP AND EVEN ALTERNATOR. NO NOISE WHEN ENGINE IS COLD, ONCE IT GETS HOT IT STARTS SQUEAKING. ANY IDEAS ON WHAT THE PROBLEM MIGHT BE?