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I have a squealing belt when idling what is the problem

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If you have what is called a serpentine belt , then ill bet your problem is either a worn out belt or a defective belt tension idler spring , yes springs do loose there tension as they get older !!!

Posted on Dec 21, 2016

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2005 ford freestar will make a squealing noise then die starts back up then may or may not do it again


Check to make sure there aren't any vacuum leaks. Did this problem start after doing the plug and intake clean, or was you having that problem before too?

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Had radiator replaced n a bolt put on alternator which is ok. New noise in idle...it squeals. Gets worse when a/c is on. In idle I pop hood N noise goes away. 2006 tiburon 4 cyl auto


Probably should replace the belt. A worn belt will squeal sometimes.'
Another thought is the belt tight enough A belt that is too loose will squeal under stress .

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I have a loud squealing noise upon starting the car. the squealing normally lasts about 30-45 seconds. sometimes the noise will appear aftrer pulling off from a stopped position, as well. all belts


Try to tighten the belts a little firm.Sounds like when engine idling no squelling only when about to take off .Some times belts may seem ok on the outside but if you look on inner side you tend to see cracks in the belts .

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could be your tenitoner pully or your belt advance auto parts sells a belts conditioner in a can buy it spray on your belt and see if it helps it should

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Replace the crank pulley before it costs you an arm and a leg. It has caused this problem. don-ohio

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Tensioners should be replaced about every 80 thousand km when u let of the gas it relieves tension on belt tensioner if the spring inside is wearing out chances are there's ur squealing sound would sound like a belt squeal not a bearing

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Engine races ten resumes normal idle, also


you may have a worn or loose belt....if not it may be your waterpump squealing...your belts turn the pump...check and see if you have coolant dripping from under the front of the engine..thanks

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Replace the belt and tighten after the belt has squeeled you have killed the belt.

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AC belt squeals under load.


The 1st thing I'd do is to get a spray bottle with water in it and spray the belt driving the compressor while the A/C is running and cycling on and off. If this quiets the squeal, it's probably too little belt tension. Check the belt driving the A/C compressor pump for sufficient tension. Do this by locating the longest part of the belt not touching a pulley. Depress the belt at the midpoint of this open span with moderate thumb pressure. It should not deflect more than about 1/2 inch. If it does deflect more, you'll need to increase the belt tension by putting more pressure on the belt route. Usually, there's some sort of bolt or machine screw on the compressor to do this. Increase the belt tension to the desired deflection. Warning - too much tension will cause premature failure of the compressor bearing!
No improvement to the squealing requires more help than I can provide you with.

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I have a 2001 Subaru Forester. When I turn the A/C on, the cars squeal loudly at idle and at slower speeds. At higher speeds 40 MPH, the squeal stops. The A/C works fine. Additionally, when the temp...


You have a loose belt on the A/C. On most new cars that is one big belt that drives everything on the car. If when you look at the belt on the grooved side, do you see cracks on the grooved part running across (from side to side) on the belt? if so, it is in bad need of a new belt. A new belt should stop the squealing noise. While you are replacing the belt also check the belt tensioner to ensure it is in good working order.

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