Hey everyone,
I have a 99 gst spyder (5 speed) that's making a humming/whirrling noise between 40 and 60 mph in any gear (3-5th). Once the noise starts, if you slowly decellerate it gets louder and sometimes when you get to around 30-35ish it'll come and go and sound *almost* like grinding, but not. It's hard to describe. The sound doesn't happen all the time, is totally gone above 60, and goes away with the clutch in and in neutral. You can however hear the sound, very faintly, with the clutch in and car in gear. The local mitsu dealer checked the tranny and said it was fine (they tore it apart and checked the gears under the remaining powertrain warranty). I'm pretty stumped as to what it could be. I don't want to bring it back to them and pay the diagnostic fee unless I'm fairly certain of what's causing the noise.
A friend of mine said that it could be a CV joint or wheel bearing, which might make sense since I hear a loud click come from the drivers side wheel well every so often.
Any ideas?