2G Annoying belt squealing

[Bluecifer361]

I’ve tried googling this with no direct answers or I’m wording it wrong. so if their is 100 threads on this I’m sorry. At idle the car won’t do it, if I rev it up the car won’t do it, but if I’m in gear rolling and give it gas the accessories belts make squealing noises. the belts look good they feel tight I’m not sure how to tell if it’s to tight, but they are definitely tight. so would this mean it’s one of the pulleys? Can I spray wd40 in it to help? I’ve never had a car do this believe it or not that it wasn’t just a loose belt.

 

[JeffGS-T97]

I had a similar issue up until it stopped suddenly because the alternator pulley completely froze burned the belt completely off . I just replaced the alternator. The bearings in the alternator shaft went bad. Look for expelled grease around the pulley shaft maybe remove the belt and spin the pulley by hand and see how much resistance you get, I would check the power steer pulley shaft the same way too.

 

[Bluecifer361]

Ok thanks for the help

 

[JeffGS-T97]

You are welcome sir. I forgot something important thing try wiggling for excessive play, and another pulley that messes up often is the tensioner.

 

[AWD-Tony]

You can try pulling one belt off at a time and try to isolate it that way. Just don't leave it running too long without the alternator/wp belt.

 

[Bluecifer361]

You can try pulling one belt off at a time and try to isolate it that way. Just don't leave it running too long without the alternator/wp belt.

That’s a good idea I’ll probably do that on my days off . Unfortunately I think it’s missing one of the bolts to tension the belt is their a vendor on here that I could purchase such a thing from before I look else where?

 

[Bluecifer361]

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[AWD-Tony]

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That's common as well and that's probably why it's making noise. You should be able to find that bolt either from another member or just get a generic bolt (not sure what grade that is).

https://www.dsmtuners.com/threads/what-size-is-that-bolt-screw-fastener.304059/

To correctly set tension for the alternator, loosen the short bolt & the bolt on the other side of the alternator. Then tighten the long bolt (the one you're missing). Once you set the tension, tighten the shorter bolt & the one on the other side.

 

[AWD-Tony]

It's 12mm m8 x 1.25 80mm long

 

[JeffGS-T97]

Yeah that bolt runs from that threaded block to the black support fixture and it sets the belt tension that is your entire issue.

 

[AWD-Tony]

It should look like this. And the yellow arrow points the other bolt for pivoting the alternator.

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[JeffGS-T97]

That is the tension setter. I'm not sure where you could get a replace ment but here is a pic of what it looks like put together correctly.

 

[Bluecifer361]

Lol I wonder if the previous owner used a crow bar to set the tension. Kinda like how you do a Bicycle rim to set the tension on the chain

 

[Bluecifer361]

https://stmtuned.com/products/oem-mitsubishi-alternator-tensioner-bolt-90-99-dsm Looks like I got lucky

 

[AWD-Tony]

The bolt wear down right under the head and it probably just broke off. Yours is the second one I've seen in a week.

 

[Bluecifer361]

Mine don’t have the pivot bolt either. This may sound dumb but if one does the tension the other bolts tightens it down when you set the tension why would you need to pivot it?

 

[AWD-Tony]

Glad you found the bolt. Pretty sure you still have the pivot bolt. Don't think the alternator would stay in place if it wasn't. You'll see a bracket off the block that guides the alt as it pivots. That shorter bolt wedges the alternator to the bracket.

 

[AWD-Tony]

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[pauleyman]

Yiur bracket looks bad also. A piece looks broken off and that bolt does nothing without it.

 

[AWD-Tony]

Yiur bracket looks bad also. A piece looks broken off and that bolt does nothing without it.

Good eye Pauley

 

[Bluecifer361]

Yiur bracket looks bad also. A piece looks broken off and that bolt does nothing without it.

Damn you are correct I now see that

 

[pauleyman]

So I ou need both. There are enough salvaged cars you'll find one.

 

[Bluecifer361]

Well I’m leaving it on for now then until I can source these random parts. I’m horrible with wording things in searches. Would this be called the 1g,2g alternator tensioner assembly?

 

[AWD-Tony]

Make sure these threads are clean before you install the new bolt.

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[Bluecifer361]

From what I can see they don’t look messed up