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1994 4runner squealing noise

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Old 01-29-2013, 07:31 PM
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1994 4runner squealing noise

1994 4runner automatic
3vze 3.0 v6
132,000 miles
Hey everyone this is my first post on here. And I really really need some help to figure this out. I don't have money to pay a mechanic so I will be doing this myself.

So i got home the other night and when I was turning into my driveway I heard squealing coming from around the timing cover.

In the morning i started the engine and noticed that the fan or Whatever pulley that is connected to the fan was moving up and down like its loose. Kinda looks like the whole thing is gunna fly off.

Does anyone no where I should start? I've never taken belts and pulleys off before but I want to learn. Is there a tread or step by step video someone can post?

Thanks everyone!
Old 01-29-2013, 09:07 PM
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Anyone?
Old 01-29-2013, 09:31 PM
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Give it time they will chime in and welcome, sorry I don't have an answer for you maybe your belt tensioner is loose or needing to be replaced?? Just a guess?
Old 01-30-2013, 04:05 AM
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Post pics.Sounds like the fan bearing.No biggie to swap.
Old 01-30-2013, 12:20 PM
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Ok so here is the pulley that is moving.
My neighbor said it looks like the idler pulley could that be it?
Attached Thumbnails 1994 4runner squealing noise-image-3168126093.jpg   1994 4runner squealing noise-image-740934025.jpg   1994 4runner squealing noise-image-2026337977.jpg  
Old 01-30-2013, 02:15 PM
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Originally Posted by 65094runner
Ok so here is the pulley that is moving.
My neighbor said it looks like the idler pulley could that be it?
In the third picture, the fan looks crooked. Check those nuts and make sure they are tight(the right ones in the photo, just check em all cause you've likely moved it since the pictures). Granted loose nuts there is more of a banging ratting sound. Those nuts also hold the pulley to the pump, and can make it appear to be bearing failure but it's just the pully moving around on the mount.

Both of your belts are due for replacment. The forward one is badly frayed, and the rear one has sunk into the goove.

Over tensioning these belts puts excess strain on the water pump, and may have caused the bearings to fail.

And yeah the manual has step by step directions and there are likely videos a search would turn up.
Old 01-31-2013, 07:48 PM
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Originally Posted by Co_94_PU

In the third picture, the fan looks crooked. Check those nuts and make sure they are tight(the right ones in the photo, just check em all cause you've likely moved it since the pictures). Granted loose nuts there is more of a banging ratting sound. Those nuts also hold the pulley to the pump, and can make it appear to be bearing failure but it's just the pully moving around on the mount.

Both of your belts are due for replacment. The forward one is badly frayed, and the rear one has sunk into the goove.

Over tensioning these belts puts excess strain on the water pump, and may have caused the bearings to fail.

And yeah the manual has step by step directions and there are likely videos a search would turn up.
I checked all the nuts and they are tight. I even tried wiggling the whole assembly that was moving but it won't move.

I want to take the belts off so I can see if there's any play with the pulley.

Do you no how I take the belts off I've been searching but can't find anything.
Old 01-31-2013, 08:47 PM
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Originally Posted by 65094runner
I checked all the nuts and they are tight. I even tried wiggling the whole assembly that was moving but it won't move.

I want to take the belts off so I can see if there's any play with the pulley.

Do you no how I take the belts off I've been searching but can't find anything.
You can't convince me that is straight and tight, the optical effects should make the farther away nut look closer to the pully not farther away from it. It's not the parthenon I'm too lazy to install photoshop and measure it but mspaint says it's about 25% farther away from the pully rim..

Anyways, i'm only a little cranky, and shouldn't beat you up You atleast noticed something was wrong and want to fix it

Grab a manual at the parts store, or library. And/Or search for and download the "Factory service manual". Basicly there is a bolt in a slot usually that holds the tension, or an adjustable tension idle pully. (Note thats not an idle pully thats the front of the water pump)
Old 01-31-2013, 09:00 PM
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You can go to your local parts store and pick up a dvd that will show you how to do repairs changing belts is pretty simple as for the fan if its moving sounds like the bolts are loose or a bearing is going up
Old 01-31-2013, 09:19 PM
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timing belt tensioner...

Last edited by cman1; 02-01-2013 at 11:08 AM.
Old 01-31-2013, 09:33 PM
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You still need a manual =P

Heres pictures.

Tensioner idle

location clarified.


Alternator


Part you might be replacing if the item you showed pictures of is wobbling. It's a "Fan idler".


All those photos come from This thread, it's a timing belt replacement job. Great pictures!
Old 02-01-2013, 04:27 PM
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Thankyou for that link . You're a boss

I got the alt and psp belts off. But Im stuck trying to remove that bottom tension belt. I unscrewed that bolt, I can see how there is a slot that the pulley should slide up to release the belt. But it is stuck I pushed on it but its frozen. Is there another bolt I'm not seeing?
Old 02-01-2013, 04:36 PM
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did loosen the nut in the center of that pulley?
Old 02-01-2013, 06:56 PM
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Originally Posted by oldblue
did loosen the nut in the center of that pulley?
I didn't. Am I supposed to?
It's the ac belt, I loosened the bolt till it came out.

I took pictures.
Attached Thumbnails 1994 4runner squealing noise-image-890215111.jpg   1994 4runner squealing noise-image-4291211823.jpg   1994 4runner squealing noise-image-3135193566.jpg   1994 4runner squealing noise-image-485343789.jpg  
Old 02-01-2013, 10:28 PM
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Originally Posted by 65094runner
I didn't. Am I supposed to?
It's the ac belt, I loosened the bolt till it came out.

I took pictures.
Yeah loosen that, it can't slide if it's tight.

And you still need a manual But someone might post the torque specs for you and the belt tension. You can get instructions from autozones website too for free, sometimes with a registration sign up but still free.

*edit* I'm goona use that next time I have to change belts sure looks like it'll make removing/loosening that tension bolt alot easier

Last edited by Co_94_PU; 02-01-2013 at 10:30 PM.
Old 02-02-2013, 10:15 AM
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Thank you I got the belts off.

The fan sounds verry weird when I spin it kinda sounds like a bearing blew. And I can wiggle it.

I'm gunna post a video when I figure out how to
Old 02-02-2013, 06:26 PM
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Update

I got the radiator drained and the timing cover off. Then I took off the fan bracket off .
The fan bracket bearing is toast.

I'm going to get a new fan bracket from orielly for $125.00. And I got a new ac pulley and all new belts.
Attached Thumbnails 1994 4runner squealing noise-image-3159132040.jpg   1994 4runner squealing noise-image-2308112080.jpg   1994 4runner squealing noise-image-2426539786.jpg   1994 4runner squealing noise-image-1962287495.jpg  
Old 02-02-2013, 11:56 PM
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Originally Posted by Co_94_PU
You still need a manual =P

Heres pictures.

Tensioner idle

location clarified.

Alternator

Part you might be replacing if the item you showed pictures of is wobbling. It's a "Fan idler".

All those photos come from This thread, it's a timing belt replacement job. Great pictures!
Do you how I would put the new fan bracket on? There is a tensioner, here are sum pics.

I got a book but it doesn't explain this
Attached Thumbnails 1994 4runner squealing noise-image-2830588292.jpg   1994 4runner squealing noise-image-1721699506.jpg   1994 4runner squealing noise-image-1660055845.jpg   1994 4runner squealing noise-image-1220001033.jpg   1994 4runner squealing noise-image-3410849562.jpg  

Old 02-03-2013, 12:32 AM
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FSM Page Eg2-45

Wow thats crazy you like basicly need to set a volkswagon full of fat chicks on it

12. SET TIMING BELT TENSIONER
(a) Using a press, slowly press in the push rod using 981
– 9,807 N (100 – 1,000 kgf, 200 – 2,205 lbf) of
force.
(b) Align the holes of the push rod and housing, pass a
1.5 mm hexagon wrench through the holes to keep
the setting position of the push rod.
(c) Release the press
(d) Install the dust boot to the tensioner.
13. INSTALL TIMING BELT TENSIONER
(a) Temporarily install the belt tensioner with the two
bolts.
(b) Alternately tighten the two bolts.
Torque: 26 N–m (270 kgf–cm, 20 ft–lbf)
(c) Using pliers, remove the 1.5 mm hexagon wrench
from the belt tensioner.
Probably best to start reading on EG2-41 however

Last edited by Co_94_PU; 02-03-2013 at 12:33 AM. Reason: too many Y's
Old 02-03-2013, 12:52 AM
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Post here says you can do it in a vise maybe. Or a new one with "factory" safety pin will run you less than 50$.
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