Intermittent squealing when starting truck

2001 NISSAN XTERRA
180,000 MILES • 4WD • AUTOMATIC
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RIVERS42
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When I start up my truck it starts squealing immediately but sometimes when I crank up my truck it won't squeal at all. Also sometimes not often but when I come to a full stop and sit there for like 15 seconds it will start to squeal, but it's not very often that it happens.
Jan 15, 2021 at 2:16 PM
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ASEMASTER6371
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Good evening,

This sounds like the drive belt or the tensioner not keeping the belt tight.

https://www.2carpros.com/articles/how-a-serpentine-belt-works

https://www.2carpros.com/articles/replace-serpentine-belt

https://www.2carpros.com/articles/how-a-serpentine-belt-tensioner-works

https://www.2carpros.com/articles/serpentine-belt-tensioner-replacement

I would replace both the belt and tensioner.

Roy

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Jan 15, 2021 at 2:51 PM
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RIVERS42
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Okay, see it initially started a couple months ago after I changed the alternator but for some reason I didn't inspect the belt while I had it off.
Would it still squeal if the belt was too tight?
Jan 15, 2021 at 3:06 PM
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ASEMASTER6371
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No, it would not. Only if it is loose.

Roy
Jan 15, 2021 at 3:23 PM
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RIVERS42
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Okay, thanks. I really appreciate it and I have a v belt system. would you suggest just changing the one that goes to the alternator or changing all 3 of them?
Jan 15, 2021 at 4:02 PM
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ASEMASTER6371
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I would replace all of them.

Roy
Jan 15, 2021 at 4:04 PM