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squealing noise

641 Views 1 Reply 2 Participants Last post by  Elig90
Hello, my first post. I have a 2017XC90 Momentum 2.0 tr. It has a squealing noise around upper cam gears after driving a short period. I replaced the oil trap with pcv diaphragm on top of valve cover, still makes the noise. So then I replaced the pcv check valve at rear/drivers side of cylinder head and it still builds so much crankcase vacuum it makes the squealing noise as bad as in the beginning. I am stumped?? do you guys have any insight? Thanks in advance.
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Hi there, I have the same exact issue. Any updates to a possible fix?
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