The timing belt tensioner pulley may make a squealing noise from the timing cover area on cold startup. An updated tensioner with a thicker mounting bracket to eliminate vibration may be needed to solve the problem.Google+
Car Problem Reports
Mazda Protege Squealing In Timing Cover Area When Cold
Mazda Protege Problem
Engines Affected: 1.5L 4 Cylinder, 1.6L 4 Cylinder, 1.8L 4 Cylinder, 2.0L 4 Cylinder
Average Mileage: 139,059 mi (60,000 mi - 250,000 mi)
Visitor, 1996 Mazda Protege, 1.5L 4 Cylinder, 158,000 mi
belt sqeals when starting in extremely cold times. Belt has broken twice when below zero temperature. replaced adjuster and it has helped some but broken another time after that as well. temperature was below zero when it broke.
Visitor, 1999 Mazda Protege, 1.6L 4 Cylinder, 250,000 mi
A couple of times I have had to replace the belt.
Visitor, 1995 Mazda Protege, 1.8L 4 Cylinder, 150,000 mi
Tightened alternator play
Visitor, 1999 Mazda Protege, 1.6L 4 Cylinder, 100,000 mi
has not been fixed yet
Visitor, 1999 Mazda Protege, 1.6L 4 Cylinder, 190,000 mi
Oil leak suspected in wearing down / loosing alternator belt, eventually breaking altogether.
Visitor, 1996 Mazda Protege, 1.5L 4 Cylinder, 130,000 mi
My car usually squeals during a cold startup. I just replaced the belts and the squealing persists. From reading this, I am now suspecting that its the timing belt.