Quote:
Originally Posted by Aaron_blatherwick
Singing noise
I just notice a new noise and was wondering if anyone else has heard it as well, at 70 mph there is a singing noise and I'm hoping it is but it sounds like it's coming from the hpfp. It only does it under light throttle. When you let off or give wot it goes away. I can just barely hear crickets at idle and really is not bad. It gets louder at 80 and higher. If it's not the hpfp I might really be sol.
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http://www.bobistheoilguy.com/forums...Number=1598249
Is it at a specific speed, and does it go away under heavier throttle or deceleration?
Did you ever change your differential oil?
I used to have this "problem" with my Kaaz diff in my S13. It was a combination of the oil used + improperly set backlash.
-alex