If there is a way to loosen the tension on the belt try that,you can also try getting some belt dressing to spray on it, also you can spray some WD40 on it ,, anything else you need you can find it here>>www.discountbargainprices.com
SOURCE: 2005 honda accord hybrid - high pitch noise
I have the same problem and called Honda. One of their technicians said its related to transmission fluid and is considered normal, and there's nothing to fix. :(
SOURCE: High Pitch Noise in 2000 Jeep Grand Cherokee limited
Check your power steering fluid level, and system for leaks. May be a bad p/s pump as well. Hope this helps
SOURCE: high pitch whistling noise in engine compartment of 2005 envoy
There may be a small hole or cut in a vacum line or possibly just loose. Also make sure the air filter box and the big hose to it are secure and clamps etc are tight. Pulleys and belts can make a high pitch sound also.
SOURCE: high pitched squealing noise when i start engine
One of the belt should be loose or worn. Make sure they are not worn or cracking before tightening.
SOURCE: High pitch winding noise on cold start up.
Sounds like a constricted IAC Idle air control valve passsage. Fairly simple to fix. Remove air filter trunking all the way to the throttle body to allow access. The IAC allows air passed the throttle when closed at idle. Just on the inside of the throttle body in front of the throttle flap there is an opening in the throttle wall. This is the air inlet to the IAC; there is an outlet similar on the other side of the throttle. Use carb cleaner and cloth to shift the grime from this tubing and get it like new. Hold the throttle flap open to get at both ends of the IAC tubing. The IAC can be detached and cleaned to a shine. Reinstall the IAC and replace all air pipe ducting. Leave for about 20 minutes to allow any cleaner residue to dry out. When you restart you might experience a bit of uneven running but this will disappear very quickly as the last of the cleaner dries out
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