Rattling noise from timing belt tensioner at higher mileages on Toyota Tercel

Problem Description and Possible Solution
The timing belt tensioners may make a rattling noise at a higher mileages. This is due to the adjustment being at its limit. Our technicians tell us that range of the adjuster may be lengthened by elongating the slot where the spring attaches by 2-3 mm to remedy this problem.
Problem Data
RepairPal Verified
Average mileage: 164,573 (103,900–225,246)
Engine affected: 1.5L 4 Cylinder
5 model years affected: 1995, 1996, 1997, 1998, more1999
9 people reported this problem
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technician replaced belts because one was split in two, now it rattles
Turned up the radio