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How to replace a belt tensioner?

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Old 01-30-2008, 08:04 AM   #1
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How to replace a belt tensioner?

Anyone have write up on removing the belt tesioner on a 2003 S10 I4?

When you start the truck it makes hideous rattling sound. I thought OMFG the engine is toast but under further investigation I found that the belt tensioner is "rattling" "shaking" like crazy.
Old 01-30-2008, 12:44 PM   #2
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Re: How to replace a belt tensioner?

Quote: Originally Posted by Jizz
Anyone have write up on removing the belt tesioner on a 2003 S10 I4?

When you start the truck it makes hideous rattling sound. I thought OMFG the engine is toast but under further investigation I found that the belt tensioner is "rattling" "shaking" like crazy.
i'm pretty sure there's three bolts...the pulley cracked on my 95, so i replaced the whole thing, there should be three bolts near the alternator, they were a pain to get to but i got them without taking off any other stuff. i haven't had to look at the tensioner on my 98 yet but i'd assume its the same thing


I checked advance/autozone...autozone has two different part numbers, advance has the same for 94-03. it goes for like $67, i thought it was like $30 when i changed mine a year ago

Old 01-30-2008, 12:46 PM   #3
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Re: How to replace a belt tensioner?

I found a picture of my old tensioner...hope this doesn't happen to anyone


Old 01-30-2008, 12:51 PM   #4
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Re: How to replace a belt tensioner?

that happend to mine last time I took my belt off.

You just take a belt tool and remove the belt and bolt it. Like the previous posts mentioned its a few bolts. Bolt up the new one, use the belt tool again and reinstall the belt (this is a great time to replace the belt if it needs it). All said an done, this is a 15 minute job and one of the few things that is easy to do on these trucks
Old 01-30-2008, 02:44 PM   #5
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Re: How to replace a belt tensioner?

Did it this morning. Will post a HOW TO in a bit
Old 01-30-2008, 10:35 PM   #6
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Re: How to replace a belt tensioner?

Quote: Originally Posted by viperstd
that happend to mine last time I took my belt off.

You just take a belt tool and remove the belt and bolt it. Like the previous posts mentioned its a few bolts. Bolt up the new one, use the belt tool again and reinstall the belt (this is a great time to replace the belt if it needs it). All said an done, this is a 15 minute job and one of the few things that is easy to do on these trucks
belt tool = 3/8 socket wrench
Old 01-31-2008, 07:13 AM   #7
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Re: How to replace a belt tensioner?

Quote: Originally Posted by tg900
belt tool = 3/8 socket wrench
I own a 600+ toolset, and nothing clears by fan other than a belt tool. believe my, i've bled trying
Old 01-31-2008, 07:50 AM   #8
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Re: How to replace a belt tensioner?

Quote: Originally Posted by viperstd
I own a 600+ toolset, and nothing clears by fan other than a belt tool. believe my, i've bled trying
I used standard 3/8 craftsman, no problem with clutch fan in way either, just work it in between blades, but eh at least you got the belt tool
Old 02-02-2008, 09:05 PM   #9
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Re: How to replace a belt tensioner?

WOW just WOW!

We need a "HOW TO" section.

I did not need any special tools.

I used a 3/8" ratchet as the "removal" tool it was a Craftsman standard. Had no problems at all. I had the belt on at all positions except the AC. I moved the tesioner to the left (if facing the front of the truck) and my wife slipped the belt over the AC pulley -- walla done.

I will wirte up a full HOW TO Monday.

Can we get a HOW TO sticky going?

With this may people on this forum we should be able to pull this truck apart and put it back together ourselves!
Old 02-02-2008, 09:06 PM   #10
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Re: How to replace a belt tensioner?

OK maybe there was some confusion. I have a 2003 I4. It has 1 bolt holding on the tensioner.
Old 02-03-2008, 10:24 AM   #11
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Re: How to replace a belt tensioner?

Quote: Originally Posted by Jizz
OK maybe there was some confusion. I have a 2003 I4. It has 1 bolt holding on the tensioner.
The picture was with the tensioner bracket attached. Only one bolt holds the tensioner to the bracket. Same setup accross the board. Did mine a few years back.

Edit: Sorry I was late to the party. Very easy fix

Last edited by Dozer600; 02-03-2008 at 10:25 AM.
Old 02-03-2008, 10:33 AM   #12
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Re: How to replace a belt tensioner?

Quote: Originally Posted by tg900
I found a picture of my old tensioner...hope this doesn't happen to anyone


Is it just me, or does that bracket look like it has a completely ****ED bolt pattern?
Old 02-03-2008, 09:50 PM   #13
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Re: How to replace a belt tensioner?

bolt pattern is right at least for my 94-97 2.2 it was, i never had any problems yet on my 98+, keep in mind the top of that touches the engine block, so the spring pushes the pulley in
Old 02-04-2008, 09:43 PM   #14
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Re: How to replace a belt tensioner?

Quote: Originally Posted by Jizz
Can we get a HOW TO sticky going?

With this may people on this forum we should be able to pull this truck apart and put it back together ourselves!
Im right here

alot post progress of upgrade and not just rebuild for stock thats why not much of these sticky
Old 09-14-2009, 05:12 PM   #15
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Re: How to replace a belt tensioner?

Sorry to dig up an old thread, but I figured at least it shows I did search...haha

but anyway, I am about to change the tensioner on my 2001, and after a ton of picture looking, I have came across a few pics on e-bay, and those tensioners look nothing like these, it appears to only have one bolt in the center...

So my question is, am i looking at the wrong tensioner, or is that the correcct one, and if it is, what is the proper way to take it off? Im afraid if i just jump into it, I will let all the tension off, and it will go flying...haha

any one know?
Old 09-14-2009, 05:28 PM   #16
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Re: How to replace a belt tensioner?

sorry, heres the pictures I was talking about....
Attached Thumbnails
How to replace a belt tensioner?-20_1_b.jpg   How to replace a belt tensioner?-85_1_b.jpg   How to replace a belt tensioner?-de8c_1.jpg  
Old 09-14-2009, 05:35 PM   #17
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Re: How to replace a belt tensioner?

Yup that's it.



Old 09-14-2009, 07:36 PM   #18
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Re: How to replace a belt tensioner?

so do I just remove that center bolt to take it off? and it wont come flying at me?
Old 09-14-2009, 08:45 PM   #19
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Re: How to replace a belt tensioner?

You have to remove the belt first! lol
Old 09-14-2009, 08:46 PM   #20
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Re: How to replace a belt tensioner?

I did mine a few weeks ago, it was not to bad to change out. It was making all kinds of noise with or without the a/c on.
Old 09-14-2009, 10:12 PM   #21
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Re: How to replace a belt tensioner?

Quote: Originally Posted by fish head
You have to remove the belt first! lol
smart ass...haha, but I kinda figured that one out already... and yeah, like I said in my other thread, it sounds like a damn cummins idling...
Old 09-15-2009, 05:39 AM   #22
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Re: How to replace a belt tensioner?

I got you! Mine was very loud also.
Old 09-17-2009, 01:13 AM   #23
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Re: How to replace a belt tensioner?

Hey, my first truck when I was 16 was a 1ton dodge cummins dually flatbed farm truck with a 5spd getrag tranny. I loved that truck to death until I had to sell it due to health issues and other problems last summer. If my s10 started making such a sweet sound like a 12 valve cummins, I would most likely keep it like that for as long as I could...haha!
Old 09-17-2009, 12:14 PM   #24
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Re: How to replace a belt tensioner?

Great info! this is how I found this site as the Chilton manual has no specific r/r for this item.

I thought I toasted my motor with all the damn rattling but than the steering all of sudden got real hard to steer LOL!

It lasted 183,647 miles

Autozone $51-$63 here in Jacksonville with Autozone being the least expensive (97 S-10 2.2 4 cyl)
Old 09-18-2009, 06:31 PM   #25
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Re: How to replace a belt tensioner?

On my '02 it's easy to get to belt tensioner from underneath after jacking up.
From the top it wud be a real pain.
Pete
Old 09-19-2009, 01:23 AM   #26
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Re: How to replace a belt tensioner?

yeah, it probably would have been easier from the bottom... I changed it this afternoon, I wouldve went from the bottom, but it rained earlier, and the ground was soft damn it, but even taking the fan shroud and all off took me only like 2 hours, and that was taking my time...
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