2011 5.3 engine noise, lend me your ears

Gearz · Feb 5, 2024

That sounds like a belt tensioner and when you cleaned the TB the idle changed and the sound changed because of the idle speed. Did you remove the belt like another member said? I had a Equinox do the same thing. TB need to be cleaned 30-50k miles.

Toyota2Tahoe · Feb 5, 2024

Brawny said:
Codes thrown are P0521 P0523, I've already replaced the oil pressure sensor (you can see it right around :40), boy was that a task.
I have not done the DOD delete, makes the noise with belt removed. I'm wondering if this is a lifter.
What do your ears tell you?

I had a bad belt tensioner that sounded like this on my 2011 Tahoe. No expert just 2 cents

Brawny · Feb 7, 2024

Both good guesses, but nope.

j91z28d1 · Feb 7, 2024

so you cleaned the throttle body and all that noise went away?

justchecking · Feb 7, 2024

Post the sound again with the serpentine belt off. There seems to be two things going on. One sounds like a bearing in the tensioner, idler, or alternator. The other sounds like a rattle.

Fless · Feb 7, 2024

I haven't read all the responses but the first part of the audio sounds a bit like an exhaust leak to me.

2011 5.3 engine noise, lend me your ears

Gearz

Member

Toyota2Tahoe

TYF Newbie

Brawny

TYF Newbie

j91z28d1

Full Access Member

justchecking

Fless

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