RepairPal Certified shops can diagnose and repair your 1999 Nissan Quest. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Accurate service records is the ONLY 'reliable' way to know the exact date and mileage any prior work was performed!
Partial engine disassembly for visual inspection of the belt 'may' offer a clue as to IF it has been replaced OR not.