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What you are hearing is the clutch on the air conditioning pump engaging... the alternator doesn't make any noise unless the bearings are going bad and then a grinding noise will be heard.
The clutch assemble is shot...
Yes they can make a grinding noise, if they are bad.
Normally a rusty rotor would not make a grinding noise. A grinding noise from the brakes usually indicated that the pads or shoes are worn down.
lol change your brake pads they make a grinding noise when its time to replace
When the clutch is adjusted properly the throw-out bearing is COMPLETELY disengaged as soon as you take your foot off the clutch. A throw-out bearing that is lightly touching the pressure plate can often make noise, especially if the bearing is getting ready to go. Make sure the clutch is properly engaged. There should be about an inch of play at the top of the pedal throw. Also make sure all of the springs are in place, pulling the clutch forks off the bearing.
A grinding noise form a wheel is usually caused by a bad wheel bearing.
your barrins in the wheels
All fans will make a "whooshing noise" If there is a squeaking or grinding noise the fan motor needs to be replaced/refurbished.
It could make a grinding type noise when moving slow. A "whirrr" type whine when moving faster. The grinding noise may change to a clunking noise when turning the wheel. Any of these noises means "fix me now or else."
A throwout bearing can make a whistling sound- really more of a chirp than a whistle. Unfortunately, it sounds like you are in for a new clutch assy.
why does my 1996 ford tarus wagon make noise when i turn key in ignition