Whistling
#1
Whistling
I started my 2007 scion tC today and for some reason it started whistling while idling (it wasn't doing it last night). I then put it in gear and it seems like the higher the RPM the louder the whistling gets. I can tell it is coming from the engine but I have no idea what it could be. It is routinely service and maintained.
Last edited by 07t; 03-10-2016 at 05:21 PM. Reason: Specification
#5
That is definetaly an alternator issue. Specifically the diode block will make that squealing noise as the diodes go bad. Change it before your wreck the battery as well.
FYI,
Vacuum leak would be opposite from his issue. It would squeal loud during idle, completely go away as engine speed increases if it was a vac leak.
FYI,
Vacuum leak would be opposite from his issue. It would squeal loud during idle, completely go away as engine speed increases if it was a vac leak.
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