Ahhh sweetMYSTERY SOLVED!!!
Its the "Air Assist Solenoid" i found pictures here
Looks like they added this system for 99/00, and based on the pictures, mine is broken, so i'll replace it with a plug.
Although... It might help with the aforementioned idle issue.
Otto, the CEL is always on, along with SRS. car came that way, but my scanner shows no codes present
Dont Worry, It's on the list.
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