Question about Cars & Trucks
Very posible its the ac compressor and yes it has to be replaced complete take belts off turn pulleys one at time and check for play at pulleys if any noise coming out of ethere one thats the problem ok
Posted on Dec 02, 2012
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Posted on Jan 02, 2017
Try removing the belt and turning each pulley by hand. If everything is smooth and free, with the belt still off, drive down the block once and see if the noise is there (this will eliminate all rotating accessories on the front). If you hear the noise, then there is a problem deeper inside. Oil pressure is good? Dont' forget when doing this, you will have no power steering, so be careful.
Posted on Jan 17, 2009
There are a few items that can create the squeal.
The squeal is created by the belt slipping on a pulley, but what causes it?
Well, first of all as the belt ages the rubber tends to get hard and dirt/sand impregnates into the rubber. Because of this it loses its grip on the pulley.
It's especially bad first thing because the rubber is generally cooler/harder and your alternator is trying to charge your battery up.
Second cause is a loose drive belt. Years ago V-belts had to be checked and adjusted often as the wore. The serpentine belts used today stretch and wear very little and are kept tight by a spring tensioned pulley. Sometimes, especially in a vehicle that has been sitting, the tensioner pivot would corrode and not allow proper tension to be applied. This would allow the belt to come loose and slip.
Third on the list is a pulley out of line with the others. If this is the case one of the pulleys may force the belt over to the side and lift the belt out of the grooves. This will also accelerate belt wear.
Next will be a worn or seized bearing on one of the components the belt rides on. This will include anything the belt turns.
If seized it will strain the belt and cause it to slip.
If worn the bearing may tilt in and give a similar symptom as a pulley out of line.
This should cover the cause of your problem. If you have further questions please leave it in "add comments" and I will return to check.
Posted on Dec 29, 2009
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