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  1. #91
    HIPPO

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    Yeah, primarily. When I'm at 70ish mph and let off the gas for a sec or three I can hear/feel a slight grinding vibration. I had the drive shaft out yesterday and checked it over. No wear marks. Everything looks fine. Rebolted it up just rotated the U joint 180 when I bolted it back in. Vibration was still there on test drive last night. Going to unbolt adapter to transfer case and rebolt it to see if it makes a difference.

  2. #92
    "Like Nothing Else"
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    Let me reiterate I wasn't having a vibration, it was a noise at a certain point in the torque curve. And Chris, no what I heard was on acceleration.
    -2009 H3 Alpha/Adv||SAS/SOA
    -2008 H3 Alpha-RIP

  3. #93
    Bogger
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    Quote Originally Posted by 06 H3 View Post
    When u guys talk about noise is it noise on deceleration?
    At all times. It is at all speeds as well which leads me to believe it is the double cardan. Because it is a new sound is why it is of concern. But I'm not overly concerned, if was transferred to the body I would be. Did my pictures show up or is the site still acting up?

    Sent from my SPH-L720 using Tapatalk
    2006 H3 Adventure & modified Rancho with SOA

  4. #94
    Bogger
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    Quote Originally Posted by cgalpha08 View Post
    Let me reiterate I wasn't having a vibration, it was a noise at a certain point in the torque curve. And Chris, no what I heard was on acceleration.
    Did you add grease before you installed it?

    Sent from my SPH-L720 using Tapatalk
    2006 H3 Adventure & modified Rancho with SOA

  5. #95
    "Like Nothing Else"
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    Quote Originally Posted by rascole View Post
    Did you add grease before you installed it?

    Sent from my SPH-L720 using Tapatalk
    No, it came pre-greased, at least it should have and that's what it looked like.
    -2009 H3 Alpha/Adv||SAS/SOA
    -2008 H3 Alpha-RIP

  6. #96
    HIPPO

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    Yeah, mine was pre greased as well

  7. #97
    Bogger
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    Mine LOOKED pre greased with a red lube but I added 2 squirts just in case.

    Sent from my SPH-L720 using Tapatalk
    2006 H3 Adventure & modified Rancho with SOA

  8. #98
    All Terrain

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    that kind of grinding noise was the first sign of our pinion bearing going out
    Jeff

    2008 3 Alpha
    4" Tuff Country with a touch of Rancho, SOA conversion, Ridge Demon Rock Bashers w/ steps, Ridge Demon front frame strengthening plates, 325/60/20, KMC Addicts, Thor parts front n rear bumpers with front skid plate, Thor Parts drive shaft adapter with u-joint front drive shaft, Thor parts UCP steel plates, Scorpion works steering rack brace, Recon 10.5k winch, Artec dual battery conversion and probably a few other things I'm forgetting.

    Oh and it's my wife's

  9. #99
    Bogger
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    2006 H3 Adventure & modified Rancho with SOA

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  11. #100
    Super Swamper
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    Rascole....that sounds horrible! I'll be the first to admit that I don't watch, or listen to undercarriage video very often...so I don't have much of an opinion based solely on your video. But, its definitely "loud and grindy". It sounds like a bearing issue to me...probably pinion bearing or perhaps something going bad in the output shaft of the t-case. I'm assuming you can hear this inside the cabin, as well? My first thought is to check the pinion bearing on the front axle, as they are often times completely void of any pre-load at all. Grab the front diff yoke and give it a firm hand-shake...see if you can feel any looseness in it. Specifically, side-to-side looseness (not backlash looseness). This is best done with the front wheels off the ground, and the driveshaft disconnected.

    I had a similar sound coming from my H3 and I would have bet my right arm it was a pinion bearing. However, it turned out to be a heat shield on the exhaust system. It rattled on decel and sounded amazingly similar to yours. It also seemed to get worse as the operating temperature rose. I had to drive around for 15 minutes before it became fully-audible. You might tap all the heat shields (there are several of them) with a hammer, and see if the sounds goes away, or changes. I think the solid cardan CV transmits more engine/driveline noise to the rest of the truck, and if a shield is loose...it will rattle, where it didn't before.

  12. #101
    Bogger
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    As far as the sound, the video may not represent exactly how I hear it. I would describe it more as a clicking sound. When I replaced the shaft I checked for movement and found none, all 4 wheels were off the ground because I was doing rear brakes at the same time. As far as the sound, it is barely audible inside the cabin when I am close to another car or building and hear the echo. I drove it in to work this morning and hit 75 mph for 5+ miles and felt no vibration whatsoever. This weekend I will take the front shaft off and run it again with the camera. Remember that this sound was NOT there before I swapped shafts so I doubt the pinion bearing would fail at the same time, BUT.
    2006 H3 Adventure & modified Rancho with SOA

  13. #102
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    The high-speed CV on the stock shaft is fantastic at cancelling vibes and masking any drivetrain noises that would otherwise be transmitted to the rest of the vehicle. Its entirely possible that the source of the noise has been there all along...but hidden by the stock shaft.

  14. #103
    Bogger
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    2006 H3 Adventure & modified Rancho with SOA

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  16. #104
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    Great video....but I don't see any issues that would cause the noise.

  17. #105
    Bogger
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    Same here. I'm going to pull the front shaft and try it out. I'm more curious than anything else.
    2006 H3 Adventure & modified Rancho with SOA


 

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