Q: engine has developed a high pitched whine sound

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The engine is making a high-pitched whining sound. It started soon after replacing the alternator.

My car has 175600 miles.
My car has an automatic transmission.

Hi there. Usually a high pitched sound as you are describing is caused by a bearing, pulley or belt that is worn out. Since there are multiple possible sources under the hood of your vehicle that could cause this noise, it’s best to have a professional mechanic complete an inspection at your location. This will allow them to isolate the source and recommend the right repairs.

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