2005 Kia Optima - belts squealing - Kia Forum
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#1 (permalink) Old 05-30-2010, 06:36 AM
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Default 2005 Kia Optima - belts squealing

I had the belts replaced on my 2005 Kia Optima and they are squealing. I have gone back to the shop 4 times and they can't fix it. They tried changing the tension, replacing the belts again, checking the pulleys, etc. Every time, they stop squealing just long enough for my ride home and then they start again. To top it off, my alternator just died and I don't know if that would be at all related to the belt issue.
Any suggestions?
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#2 (permalink) Old 06-06-2010, 12:16 PM
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I had the same issue and I basically used a combination of WD40 and belt grease and generally not worrying about it - unless it's really really loud. The alternator would affect your battery-powered stuff, but not generally the belt, I think?
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#3 (permalink) Old 06-06-2010, 01:31 PM
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It would depend on what you mean by "your alternator went bad". If the bearing in the alternator is worn/hanging/binding that will make the belt squeal every time. Also if you're buying low quality belts. When you say "belts" Ill assume your Optima has the 2.4L, since the 2.7 only has one belt. Have you replaced the alternator and now are still having the squealing issues?
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#4 (permalink) Old 06-28-2010, 06:19 PM
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1) Yes, over tightening the surpentine belt will burn out the bearings in your alternator - And it probably did. The dealer would have checked the bearing before putting on the new belt and definitely after you complained about the squeal. Any mechanic out there will tell you the same thing. There is no doubt they caused your alternator to die.
2) I have the same problem and the dealer, Morries in Wayzata Mn, said it was normal. Having working on cars and airplanes for over 30 years I know this is not true. I filed a complaint with kia. You should do the same.
Your dealer should replace or pay to replace both your belt and your alternator. If they do not know how to install a surpentine belt they shouldn't be repairing cars.
FYI: The reason it is squealing is because they put a cheapo belt on instead of the oem part.
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#5 (permalink) Old 07-10-2010, 08:21 AM
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Default belt squeal

I've had similar problem with my Magentis 2000cc. Although having fitted genuine belts they seemd to stretch and I had to re tension them (a/c and alternator belts) three times. I was worried about overtightening and used the finger and thumb 1/4 of turn twist method to set the tension. So far so good.
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#6 (permalink) Old 09-24-2010, 10:22 AM
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I had my belts (original) and the tensioner changed too, 4days ago, and they (or just one ) is/are squealing each time i start the car. Squealing stops 30sec-1 min after starting (longer when cold).I'm hoping it's just tension, i'm not able to go to my mechanic so i'll have to tension it myself.
How do you tension ac belt?
Any help greatly apreciated!

Last edited by bynesa; 09-24-2010 at 10:25 AM.
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#7 (permalink) Old 09-24-2010, 12:06 PM
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My experience is that Kia and some other mechanics use pretty cheap surpentine belts. If the one that is squealing is the wide surpentine belt you can't tighten it. You just need to replace it with a new belt - Or have your mechanic do it. It will just get worse, especially if you spray it with belt dressing. Don't believe them when they say it will go away. I picked up an $18 surpentine at O'reilly that was much heavier than the new one kia put on my car that squealed the same as yours. The dealer, Minnetonka Kia refused to replace the one they put on and said the noise was normal. Kia refused to help at all when I called them. So, a friend stopped by and helped me put the $18 one on in 15 minutes. Hasn't squealed once.
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#8 (permalink) Old 09-24-2010, 12:13 PM
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Thanx for the quick reply.
i realy hope i can tighten it, as i can't get to my mechanic, i'm on a trip abrod for 3 months. I'll try this weekend and see what i can do,if nothing happends i gues i'll have to find some mechanic here and try to fix it (god knows how much that's gona cost).
So any tips about tightening ac belt .... are welcome

Last edited by bynesa; 09-24-2010 at 12:15 PM.
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#9 (permalink) Old 09-24-2010, 12:55 PM
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This is what i found in KGIS

Adjusting the Belt Power Steering and Air conditioner
1. Loosen the tension pulley adjustment bolt A.
2. Adjust the belt deflection with adjustment bolt B.
3. Tighten the fixing bolt A.
4. Re-check the belt deflection and re-adjust, if necessary

2005 Kia Optima - belts squealing-oem_19a.gif
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#10 (permalink) Old 10-05-2010, 11:13 AM
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couldn't do it Last weekend, i didn't have the right tools.
But i got a hold of them for this weekend and finally some peace and quiet when i start the car.
Belts were very loose.
Tightening of the Ac belt is relatively straight forward, but the alternator belt... it's a really tight squeeze for a wrench and your hand... but it's doable
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