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depending on how low it is, it is either the fan rubbing against the casing or the belt that turns the fan coming loose.

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Q: What is Squealing noise when car ac is on?
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Related questions

What would cause a squealing noise when the ac is turned on?

check a/c compressor and belt.


Why does your car make a squealing noise when you turn it on?

Loose or glazed fan belt?


What makes the squealing noise in my Santa Fe when you start your car or AC is on?

check your belts they can be worn and need to be replaced or they just might be cold unless its everytime you start the car if that's the case the might need to be tightened your ac belt or fan belt could be bad.


What is the cause of a squealing noise when first starting your car?

Loose or worn belt(s).


What causes Squealing noise on a Nissan sentra when the ac is turned on?

Check for a slipping drive belt between encine crank pulley and AC compressor pulley.


Why does a 1995 Ford Wind star make a squealing noise on start up and AC does not work?

You may need to adjust your belts, check the ac belt first.


Grinding and squealing noise from car?

More likely the bearings in your alternator wearing out. Get a new alternator.


Why would your car make a squealing noise after the AC compressor or fice tub and accumulator were replaced?

you should check the belts. Sounds like one is a little loose and slipping. or the system may be over-charged


What would cause a squealing noise as i cut off my car?

It sounds like the fan-belt is slipping.


What is causing AC in car to make a squealing sound only when you start going down the road and then it stops when you reach about 55 mph When AC is turned off it doesn't do it at all.?

a loose belt between an engine pully and your AC pump is causing the squealing noise a loose belt between an engine pully and your AC pump is causing the squealing noise oic, come to find out that a bolt broke off that holds the pully that was causing the belt the squeel. Also, they ended up just replacing the water pump, saying, while we are in here, you prolly need another water pump cause they tend to got out at 60,000 and up, which is what my cars miles is. Thanks.


Car make squealing sound when start engine and when ac is on?

Worn serpentine belt and/or belt tensioner.


A squealing belt on a 2001 GMC sonoma?

A worn belt will cause a squealing noise. The squealing noise is caused when the belt slips. Tightening the belt will temporarily fix the problem.