I have a Toyota Echo that makes a squeeky noise when the AC is turned on. I think the fan is loose. How can I fix this? What do you think. The squeeky noise goes off when the AC is turned off. Thank you.

How to fix (unstick) a stuck fan vent selector on a Toyota ...

? 2:04
https://www.youtube.com/watch?v=a0JDRbCgDw0
Jan 17, 2014 - Uploaded by RodneyDickson
In this example, my 2001 Toyota Echo had its fan vent selectorindicator stuck in one position of the dial ...

Car fan / AC only works on high - Replacing the Blower ...

? 4:24
https://www.youtube.com/watch?v=33fqw0k_qkM
Aug 4, 2011 - Uploaded by Laiwah Manh
The fan in your car stopped working except when set to the highest setting. ... Sign in to make your opinion ...

03 jeep grand Cherokee blows out defrost only - Yo

AC REQUIRES MUCH POWER TO RUN. MAKE SURE YOUR ENGINE WORKS PROPERLY; WITH NEW AIR-FILTER, FRESH OIL AND CLEAN GASOLINE.

Your serpentine belts tension is loose or the belt is going hard. Check the tension on the tensioner pulley and condition of belt.
The belt is slipping on your accessory pulleys when a load is placed on them such as power steering, alternator and clutch fan.

Check the heater fan motor they have a tendency to have the shaft bearing wear out and make a squealing noise from time to time depending on how the shaft wobbles and that is the reason you don't hear it when the heater and ac is off.

Check if:-
- It is squealing or squeaking noise, the thrust bearing is at fault and need to be replaced.
- The noise varies when accelerating or decelerating, check the engine mounts and muffler Re torque all the suspension nuts and bolts. Also have a look in the engine bay area for any loose component.
- Noise is heard in any particular gear, then the transmission may require major repair.
- Check the transmission oil level.

I think the AC belt is worn or loose either tighten it up or buy a new one. Or it could something else.

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Autel DS708

CV shaft

Could just be a worn belt or faulty or loose tensioner. Does it only make noise when AC compressor kicks in? If it's not a metallic sound, and sound more like a screech/squeel, then I'd look close at belt condition, and tension.

replace ac pulley bearings or grease them if not that take all belts off see what pulley is harder to turn by hand and replace but you dont try turn crank pulley i think ac compressor bearings are going or pulleys not alined

well the belt could be loose or the compressor may be seized.....or the belt may be old and squealing.