Question about 2002 Kia Sedona

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When the airconditioning unit is switch on a wisling sound in emitted. need you support,Is it the idler bearing?

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You can take a wooden stick. Something that has been dried all way out like a broom handle. And place it up to your ear, cupping your hand on the end of it like a funnel, and place the other end on various parts of the system and hear where it is coming from. If you think it is idler pulley then stick it on the nut sticking out that does not turn.

Posted on May 11, 2010

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Noise sounds like a belt, only makes it in park, neutral and drive

Squealing noises are either
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* alternator bearing: replace the alternator.
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Sounds like a bad A/C compressor clutch. Does it change with the A/C on?

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I don't understand what your question is? If you need to replace that idler pulley then simply replace it.

Jul 20, 2014 | Cars & Trucks

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Whine coming from the left front of engine. Sounds just like its low on power steering fluid but it is full. Could this be the water pump?

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1 Answer

Some time when i start my car the engine will make a humming sound. and some time when i am driving the engine will make the same noise.

Turn off the airconditioning to see if that helps. If it does, then it is likely the airconditioning compressor.

Remove the water pump drive belt. Feel the water pump for free play. If excessive, then replace the pump. You can try spinning it too to see if it's noisy.

WIth the drive belts off, start the car for a few seconds. Twenty seconds tops should do it. Not too long as it will overheat.
Is the noise still present. If not, then check all pump bearings, pulley bearings, tensioner bearings, water pump etc as the noise is one of those things.

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Oct 14, 2012 | 1998 Holden VT Commodore

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Idler pulley makes a whing sound when running

Its bearings are going.
Temporary fix: lubricate the bearings of the pulley with 3-in-1 oil.
Keep lubricating the bearings whenever they make noise.
Fix you'll eventually need to do: replace pulley (new bearings come with the new pulley). keep the new bearings lubricated (with bearing grease), and your idler pulley will last 100,000 miles.

Oct 23, 2010 | 1992 Mitsubishi 3000GT

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Yes there is a bearing in the AC clutch assembly, and the bearing can be changed with out swapping out for a whole new AC compressor unit or even taking the unit out. 
The other thing to you may want to check is the Serpentine belt tensioner. The tensioner then to break apart and or when the clutch activate put's more pressure on the system and the idler pully bearing could alsy be the problem. 
Spray some water on the fan belt whale the engine is running and see if the noise goes away and comes back as the water dry's. If the noise goes away then it's just a worn belt and need to be changed or you may want to do the quick fix and buy Fan belt dressing. 
Good luck and hope this helps

Apr 09, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

Removing ac unit to replace clutch bearing

you need a special hub removal and reinstal tool, if u don't have it u will ruin the hub.
also read this info at the following link.

Mar 23, 2009 | 1988 Chevrolet S-10

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