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Old 09-08-2013, 07:32 PM   #1
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Help track down new vibes

So after installing my new aussie locker in the front axle it seems I might have banged up the rear driveshaft a little during some testing. Starting to get very bad vibes at speeds of 30-40mph full vibration through steering wheel and dash. Also I can still feel the vibration anytime I accelerate no matter what speed I travel. I believe it's ujoints because I have 150k on them and I'm sure they could use replacing. I also feel a faint rattling sound in rear every now and then.

Would removing the rear driveshaft and driving in 4wd be the best way to track down the issue? Also should you be able to rotate front driveshaft at all when it is in park?
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Old 09-08-2013, 07:37 PM   #2
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U can remover the rear and drive in 4wd that's fine. U can't switch shafts.

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Old 09-08-2013, 07:59 PM   #3
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Remove the f/r driveshafts one at a time to see which one is causing the vibes. You can drive without the rear driveshaft as much as you want being in 4Hi, driving with just the front driveshaft won't cause any harm.

While neither driveshaft can be rotated continually when you're in Park, both can be rotated back & forth probably 15-30 degrees due to the normal backlash (slop) between the ring & pinion gears. Having a locker installed increases that amount.
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Old 09-08-2013, 10:15 PM   #4
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Thanks for the help! Hopefully just rear shaft u joints. For both of the driveshaft u joints the replacement ones are the dana spicer 1310x if you want non greasable correct?
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Old 09-10-2013, 07:08 PM   #5
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Yes
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