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Old 02-17-2014, 04:10 PM   #1
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vibrations through drivetrain!?

So my 2004 Jeep Wrangler with a 3inch lift vibrates on takeoff I have a half inch spacer above the transfer case skid plate. I am considering a SYE to the rear and possibly a CV driveshaft if that will help.
U joints on rear driveshaft are good

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Old 02-17-2014, 04:14 PM   #2
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Also check for slop in your pinion bearing.

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Old 02-17-2014, 04:20 PM   #3
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If it just does it when taking off, check your transmission mount for separation. Put a small pry bar between the back of the transfer case skid and the transfer case and pry up. If you can lift the tc, replace the mount.
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Old 02-17-2014, 04:24 PM   #4
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I did that (water dog) it lifts but its not dramatic or sloppy. Also if I keep it revved at 1000k-1200k it isnt nearly as bad of vibration. Its only on take off.

Is there anyway I can test the rear driveshaft?
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Old 02-18-2014, 10:15 AM   #5
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Wanting to install SYE with CV driveshaft. Any good ideas? For 3" lift
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Old 02-18-2014, 05:45 PM   #6
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Quote:
Originally Posted by wranglerjrk09 View Post
Wanting to install SYE with CV driveshaft. Any good ideas? For 3" lift
I had a similar problem with a 4 inch lift. It was my pinion
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Old 02-18-2014, 06:55 PM   #7
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What angles are your drive shaft joints at? A cheap protractor would give you (guestimate) angles. If the one ate the x-fer case is steep and the diff is ok. Your vibrations are always there (but only felt at low speeds).
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Old 02-18-2014, 07:08 PM   #8
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Went ahead and ordered a Tom Woods drive shaft. And a Advance Adapters Slip Yoke Eliminator. Also have transmission and motor mounts on the way. That should fix it
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Old 02-18-2014, 07:18 PM   #9
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I had a similar problem with a 4 inch lift. It was my pinion
Rear pinion angle. It felt like driving over small speed bumps. Up to 15-20 mph. Install adjustable control arms and fixed it.
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Old 02-18-2014, 08:23 PM   #10
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I will eventually buy adjustable control arms. But im waiting till I get a 4.5" lift.

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