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How to replace the drive (serpentine) belt?

Tiny
IMAGING
  • MEMBER
  • 2005 TOYOTA SIENNA
  • 3.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 127,000 MILES
I need to replace my drive belt and need some assistance or videos. Also, all the necessary tools for the job.
Thank you.
Wednesday, October 20th, 2021 AT 12:06 PM

18 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

I attached the procedures for you for the replacements of the belts.

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

Let me know if you have any other questions.

Roy
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Wednesday, October 20th, 2021 AT 12:34 PM
Tiny
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How can you determine if the drive belt needs replacing by looking at it and hearing it?
Are there two drive belts?
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Thursday, October 21st, 2021 AT 11:32 AM
Tiny
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Yes, there are two.

Look for cracks on the belt and wear marks. Your car is almost twenty years old. The belts should be changed at 50,000 services.

If they are noisy, replace them.

Roy
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Thursday, October 21st, 2021 AT 1:10 PM
Tiny
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This is a video showcasing the engine sound.
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Thursday, October 21st, 2021 AT 3:46 PM
Tiny
ASEMASTER6371
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Did you remove the belts as I suggested to see if the noise is still there?

Roy
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Friday, October 22nd, 2021 AT 12:19 PM
Tiny
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No I didn't. So you can't tell by the video.
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Friday, October 22nd, 2021 AT 5:11 PM
Tiny
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Maybe I should just change them since the vehicle has 127,000+ miles already.
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Friday, October 22nd, 2021 AT 5:12 PM
Tiny
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Where is the other drive belt located?
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Friday, October 22nd, 2021 AT 5:14 PM
Tiny
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Just to jump in, here is a guide that will help with determining if the belt needs to be replaced:

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

Plus, here is a video that shows how to check the belt as well:

https://youtu.be/ef3N25wI8uE

Lastly you have a drive belt on the alternator and A/C compressor. Then I show you have a second belt for the power steering.

Take a look below for this info that shows how to remove each belt. There is an adjuster on the alternator and a second on next to the power steering pump.

Please let us know what other questions you have. Thanks
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Sunday, October 24th, 2021 AT 6:38 PM
Tiny
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Here's a picture of the drive(serpentine) belt.
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Monday, October 25th, 2021 AT 10:25 AM
Tiny
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That does not look terrible, but you need to inspect the ribbed side for any cracking or splitting.

Take a look at the picture below. The best way to find out is to remove the belt and then bend it to see if the grooved side of the belt is split.
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Monday, October 25th, 2021 AT 1:00 PM
Tiny
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Now, if I decide to replace the belt, what are the torque wrench settings for the 3 bolts.
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Monday, October 25th, 2021 AT 5:59 PM
Tiny
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In my original response, the diagrams have the torque specs for the bolts. It was 32 pounds.

Roy
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Tuesday, October 26th, 2021 AT 2:57 AM
Tiny
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Okay, thanks.
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Wednesday, October 27th, 2021 AT 11:37 AM
Tiny
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You are welcome.

Always glad to help.

Roy
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Wednesday, October 27th, 2021 AT 1:30 PM
Tiny
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In the above video I sent, is the drive (serpentine) belt next to the alternator?
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Friday, November 5th, 2021 AT 7:30 PM
Tiny
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All 3 bolts are 32 lbs?
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Friday, November 5th, 2021 AT 7:42 PM
Tiny
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Yes. This belt is the drive belt. Take a look at the info below. However, which three bolts are you referring too?

I attached the alternator view and torque specs below so let me know if you are talking about different bolts then shown. Thanks
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Saturday, November 6th, 2021 AT 8:38 AM

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