Driveline Explination Please
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Joined: Sep 2011
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From: Houston Texas
Driveline Explination Please
So, I have a vibration/knocking sound that to me sounds like a wheel bearing going out, but after speaking with a few people, this seems to be an uncommon thing? Someone suggested that it could possibly be my TT couplers. My problem with this theory is that sound speeds up and slows down with MPH not RPM's. If it was in fact the couplers, wouldn't the sound/vibration speed up and slow down with engine speed? For example, if I am at a red light and rev the engine I would believe that the sound would speed up and slow down with RPM's. Just trying to eliminate everything before I just start throwing parts and labor at it? Its really odd. At 20 mph I can hear and feel a vibration/knock every 1 second, at 30 mph its every 3/4 second, at 40 mph its every 1/2 second, etc. Has nothing to do with engine speed, so I don't understand how that could be the TT couplers? Thanks for your input.
Drifting
Joined: Feb 2008
Posts: 1,952
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From: Waveland MS
Put car on jack stands and let it go through gears I say it is any of these in the most likely to least likely order from your explanation.
Axle coupler broken/ joint going out
Torque tube coupler broken or cracked and coming apart
Transmission internally
Diff internally
Engine internally
Axle coupler broken/ joint going out
Torque tube coupler broken or cracked and coming apart
Transmission internally
Diff internally
Engine internally
Thread Starter
Advanced
Joined: Sep 2011
Posts: 55
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From: Houston Texas
I will do this tomorrow, but I still don't understand how any of those things would be the issue? The vibration/knock increases with tire rotation. If it was in the trans, engine, tt, etc wouldn't the sound increase with RPM's?
Drifting
Joined: Feb 2008
Posts: 1,952
Likes: 1
From: Waveland MS
Transmission most likely will increase like you said but you can't count it out.
Torque tube, no it won't increase with Rpm, but if you are in neutral with the clutch out, rev it a little and if it does it then it is something in the torque tube.
Now the axles are your best bet, I have seen tear them up a few diff ways.
