front drive shaft spinning in 2wd -
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post #1 of 4 Old 04-12-2009, 03:45 PM Thread Starter
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1989 YJ Wrangler 
Join Date: Dec 2007
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front drive shaft spinning in 2wd

I have an 87 yj all stock running gear, stock vac actuator and all, when I drive down the road in 2wd my driveshaft spins, but my tc is locked in 2wd. Is this normal?

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post #2 of 4 Old 04-12-2009, 03:52 PM
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ya it will spin a little bit but if you were to grab it which i dont suggest, it should stop moving, i found this out after i had the shifter plate out of my heep

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post #3 of 4 Old 04-12-2009, 04:02 PM
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It'll probably spin a little bit due to the friction of the oils in the transfer case.


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post #4 of 4 Old 04-12-2009, 04:07 PM
from here it gets rough
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1993 YJ Wrangler 
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When parked, can you roll under your Jeep and turn the front shaft freely when you're in 2WD? This is the way the NP231 should work, unless you have a locker in your front axle.

When I bought my Jeep, the front shaft wouldn't spin freely when in 2WD. When I rebuilt the Transfer case, I found that the mode spring had been left out, likely by whoever did some sorta maintenance on it. I replaced the spring with the rest of my rebuild, and it spins freely by least it did until I put in an Aussie.

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