Quote:
Originally Posted by sleepyvg30e
are you saying that the timing belt can just sometimes be noisy for no reason and swapping the belt for a new one will likely solve the problem?
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No. But. Noisy for a reason ...
The steel and/or fiber mesh inside the belt can cause noise without any problems - likewise the round teeth on square sprockets are noisy and may run 50k without problems (tested fact by stealership service). Noisy belt may also be faulty from factory and later cause problems (One GM noisy belt was broken to bits at 10k; cant really know the reason. My guess is that if it was replaced because of the noise, then...).
In my experience every fifth (?) belt produces some whine; but then I do swap only few belts per year.