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Unread 10-26-2012, 11:58 AM   #1
meangreeny
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1992 YJ Wrangler 
 
Join Date: Dec 2009
Location: PORT ALBERNI, BRITISH COLUMBIA
Posts: 89
231 help!!!!

Pulling my hair out on this one. Transfercase sticks in 4hi, had it apart 3 times can't find anything mechanically wrong with it and i try shifting it by hand on the bench and all seems fine. Once installed i shift into 4x4 and back into 2hi and the front shaft stays engaged. I have pulled the linkage off counted the position clicks back into 2 hi and still stuck. Usually after 15-20 minutes of driving it will all of a suddens jump back into 2hi.

Just hoping someone might have some insight into this problem, maybe something i am overlooking. The front axle disengages but not the transfercase.

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Unread 10-26-2012, 12:21 PM   #2
WhyJayPA
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1988 YJ Wrangler 
 
Join Date: Jan 2011
Location: Mechanicsburg, PA
Posts: 554
Sounds like your linkage is the problem. Have you actually shifted it from 4wd to 2wd and, while it was stuck, got under to see what position the shift lever is in? If it shifts fine on your bench then something in your linkage is causing the problem
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Unread 10-26-2012, 12:34 PM   #3
meangreeny
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i have taken the linkage off and shifted it by hand under the vehicle but had no luck front shaft still engaged
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Unread 10-26-2012, 12:36 PM   #4
mrdeath2000
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1993 YJ Wrangler 
 
Join Date: Jun 2011
Location: Surprise,, AZ
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do you have a body lift? sometimes that crates an issue with the trans tunnel opening where it hits and you cant get the shifter to move correctly. buzz the opening open more.
also, sometimes the linkage adjuster gets loose and needs some attention. check and see if you need to re-adjust it.
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Unread 10-26-2012, 02:04 PM   #5
meangreeny
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1992 YJ Wrangler 
 
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no body lift ands it does this without the linkage hooked up. shifting with my hand under the vehicle, gotta be something internal i am over looking i think.
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Unread 10-26-2012, 03:59 PM   #6
1SASjeepster
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1992 YJ Wrangler 
 
Join Date: Apr 2010
Location: Smith,TN, Tennessee
Posts: 720
Mean,

I am not sure about this. When I was putting my YJ together, I was having problems shifting my NP231. I couldn't shift it by "hand" at all. I called up JB Conversions who specialize in these transfer cases and he told me that you couldn't shift it by hand from underneath. What I am thinking is, do you think your internals are so loose that they are jamming up once it is together? My brand new NP231 doesn't shift by "hand" at all... that is why I am thinking something is "falling" out of sync, maybe just enough to be a wedge.

Take care,
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Unread 10-26-2012, 04:45 PM   #7
meangreeny
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1992 YJ Wrangler 
 
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that is a possibility, i just spoke with a trans guy i know and he suggested that the syncro in the transfercase is wore out and travelling to far and then jamming. It would then eventually pop loose after driving for awhile. Sounds like my problem but i will keep all informed after i yank it out and take a look for the 4th time in 2 years
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Unread 10-26-2012, 08:15 PM   #8
WhyJayPA
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1988 YJ Wrangler 
 
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Mine has been out of my yj 3 times in the past month. Dont feel bad haha
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"Keep your booger hook off of the bang switch"
'88 YJ SBC 350 w/ goodies, SM465 Transmission, Ford 8.8 Posi, NP231 w/ MegaShort SYE, 3.5" BDS Lift, 5/8" Boom Shackles, 33x12.50 Goodyear Duratracs, Supertop, TJ Flares, Bedlined, etc.
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