High pitched noise from the top of the engine bay
#1
10-27-2018 | 05:14 PM
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From: New York
#4
10-28-2018 | 10:24 PM
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It is most probably from the TB. The throttle motor is operated by a PWM signal which has frequency of about 300 hZ.
If you listen to this a 300 hZ audio sample (https://textmechanic.co/300Hz.ogg) you will find it similar to the sound you have.
If you listen to this a 300 hZ audio sample (https://textmechanic.co/300Hz.ogg) you will find it similar to the sound you have.
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