Ok. This would be considered a whistle or high pitch ringing and not a chirp. Sorry to get technical on the terms but a chirp is like a repetitive bird chirp.
Here is a TSB that addresses this type of noise in earlier models. Keep in mind, this TSB may not be EXACT to what your issue is but more than likely you have a line or tube under the hood that has a cut in it that when air is rushing past it makes a whistle. More than likely when you get off the accelerator it goes away. If this is the case, then I am sure this is the issue so it is just a matter of finding it. There is no easy way to do this over then inspecting them closely.
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Wednesday, July 24th, 2019 AT 6:04 PM