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Old 09-20-2013, 10:00 AM #1
SureShot516 SureShot516 is offline
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Inafamous 60-70 MPH moan, vibration

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

any solutions, any help is greatly appreciated
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Old 09-20-2013, 10:06 AM #2
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There is a GX470 tsb for this issue. I did part of it and it helped a bit.
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Old 09-20-2013, 11:43 AM #3
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M1911
was it the front diff. dampner that you changed? was it difficult?
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Old 09-20-2013, 02:32 PM #4
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My mechanic installed a new gx470 front diff damper. IIRC, it required drilling and tapping holes on the diff.
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Old 10-23-2013, 05:25 PM #5
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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.
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Old 10-23-2013, 06:16 PM #6
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Quote:
Originally Posted by M1911 View Post
There is a GX470 tsb for this issue. I did part of it.........
And the number and name of the TSB is......?
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Old 10-23-2013, 10:44 PM #7
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Quote:
Originally Posted by MrTom View Post

And the number and name of the TSB is......?
TSIB DL001-08

This link should get you the TSB: LexusTSB.com - Site Owned By AcaiSeven7 ^^ :: TSIB DL001-08 (2003–2008 LEXUS GX 470); DRIVELINE VIBRATION/DRONE BETWEEN 55 - 75 MPH
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Old 10-23-2013, 11:12 PM #8
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Hello, Thanks for the reply.
Your link didn't work for me. With the number I got the TSB at this page:
TSIB DL001-08 - free eBooks download

.
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Last edited by MrTom; 10-23-2013 at 11:15 PM.
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Old 10-24-2013, 09:04 AM #9
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Odd, it works for me on two different platforms - Mac and Nexus 7.
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