Hi all,
This afternoon I have noticed my engine developed a whistle sound noticeable at low RPM 700-1500. As the the revs gets higher the sound is less and less audible, but I think it's still there.
Sounds like a big turbo spool (sadly, it's not that 😭🤣).
When it was colder outside my engine had a whine, a very noticeable one. I was suspecting alternator, bought one to replace it, however the whine disappeared as it got warmer and no symptoms of bad alternator occurred.
Could this still be the alternator "telling" me it's soon, or a pulley?
Regards