Recently I've heard some slight whir sound regularly, I guess I need to replace the timing belt. So I called up my mechanic and he told me maxima uses the chains. But I saw the following post, didn't they talk about the belt? I am confused:

https://maxima.org/forums/7th-genera...tensioner.html

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My car: 2010, 3.5L, 100,000 kilos.

 

Timing chains on these cars. Take it in and let your mechanic see where the whirring sound is coming from.

 

1) There is a timing chain that synchronizes the crankshaft with the camshaft. On some cars this is a belt that must be replaced around 90k miles. It is a complex and expensive job. Luckily Maxima owners have a chain that does not need replacing.

2) Almost all cars, including the Maxima, have a serpentine belt that runs accessories like the alternator and the A/C compressor. This belt is relatively easy to replace.

 

3.5 are chains 3.0 old engine is a belt

 

Yes, I'll show the problem to my mechanic, Thanks!

 

Oh~ Maybe the sounds from a serpentine belt

 

Got it! I am clear 👍