I've noticed as of late that the transmission in my '86 4kq makes a "whirling" sound in 3rd and 5th gear. As soon as I take it out of that gear, the noise stops. It even makes the sound when I push in the clutch. There is no noise when in neutral or 2nd or 4th gears. What could this be? It almost sounds like a worn bearing. Any advice would be greatly appreciated. Thanks. Tom B. '86 4kq