For a while now, when I put my tranny in gear, I can hear a buzzing sound coming from the bellhousing area. It only does it for about a second when engaging reverse, but when I put the tranny into any of the forward gears it continuously buzzes. What I have noticed though, is that if I increase the idle speed by about 100 RPM's to an idle of roughly 800 RPM, there is a pretty small "click", then the buzzing sound completely goes away. I *think* that the TC is controlled by the TCU (I remember hearing that somewhere), and that would make sense since the buzzing goes away when the TCU "should" begin to engage the torque converter for movement. Does anybody have any suggestions as to what it could be? It really doesn't seem like anything worth worrying about, but that buzzing is pretty damn annoying. For a minute, I was actually considering just raising the idle speed to eliminate the noise
...but of course, I wanted to check the forums first to see if anyone had any suggestions for me. Thanks a lot guys!