so I have had this cyclical groan/vibration for a few months now between 60-70 mph it does it whether you are on the gas or take your foot off, it does it no matter if your in OD or 4th gear, i have re-greased all u joints to no avail
2005 V8 4WD
I put on new tires, no difference
you can only hear it with windows up, radio off and you can slightly feel it in the gas pedal it's cyclical (groan, not, groan, not) in 1 second intervals at 65mph
i'm gonna try changing the front diff fluid and check the fluid level though I doubt that's the issue I know plenty of others have had the same issues
Can someone post a link to this TSB? I'd like to research this more as I believe my 4Runner may be doing something similar (vibe in the steering wheel/moan between 60-70mph, although mainly when light throttle is applied). It feels like a resonance or vibration in the driveline somewhere.