Have Toyota Questions? Ask a Mechanic for Answers ASAP
Hello and welcome to just answer, my name is ***** ***** Toyota master tech here to help. I cannot hear or see your vehicle so I rely on your input to my questions so I can help you better. I read your question and what you tried so far.This will be difficult for any one to help you with not actually hearing it our selves but can give you some ideas how you can pinpoint where the noise is coming from. We do this at work the od time . Make yourself a long hollow tube that you can put to your ear and point at the vicinity of the noise when it happens the louder it gets follow that direction it's sort of like the game of hot and cold if you get my meaning, but it works. This noise could be a sticking vsv valve or solenoid .