What to Look For
As the belt starts to wear out, it may also begin to produce a high-pitched whirring or shrieking sound when the engine is running or idling. Finally, if your car is having trouble starting, then a faulty timing belt is a likely culprit.
You can watch this quick video by Auto Zone to get a visual idea of what to look for during inspection.
Have an auto repair service take a look under the hood if you notice any of the described symptoms. Your car’s operation manual will also specify how often the timing belt needs to be changed. Replacement intervals vary across models and generally range anywhere from 60,000 to 106,000 miles.
Leave the Replacement to a Mechanic