Cant shift to 4x4 drive

I have a 92 jeep wrangler and am not able to shift it into four wheel drive.
The linkage is all good and it shifts good. Also the 4x4 light is always on
even when not in four. So i looked at the senor and took off the cover where
the fork and the bearing cupler is (THe spot where u can see 4 wheel drive
locking in) I can move the couple over by hand and 4 wheel drive will work
then but so i was thinking that the fork wont move it over by its selve. I
looked at all the vacuum hoses and I bought a new Vacuum diaphram thinking it
was just low vacuum but that didnt help either.

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200601/1

You describe a common problem on YJ's. Did you also check the vacuum line
going to the transfer case?

http://www.4x4wire.com/forums/showfl...60&Main=828553
http://www.jeeptech.com/axle/d30.html

--
JimG
80' CJ-7 258 CID, HEI
4.56 Gears, Lock-Right F&R
35" BFG MT on 15x10 Centerlines
D44 Rear, D30 Front. SOA
Dana 300 w/4:1 & Currie twin sticks
Warn X8000i w/ dual batteries

00' TJ Sport 4.0L, 5sp
4.56 Gears, TrueTrac rear
33" BFG AT on 15x8 Eagle Alloys
D35 Rear, D30 Front. 3" Suspension Lift

"Jeff via CarKB.com" wrote in message ...
>I have a 92 jeep wrangler and am not able to shift it into four wheel
>drive.
> The linkage is all good and it shifts good. Also the 4x4 light is always
> on
> even when not in four. So i looked at the senor and took off the cover
> where
> the fork and the bearing cupler is (THe spot where u can see 4 wheel drive
> locking in) I can move the couple over by hand and 4 wheel drive will work
> then but so i was thinking that the fork wont move it over by its selve. I
> looked at all the vacuum hoses and I bought a new Vacuum diaphram thinking
> it
> was just low vacuum but that didnt help either.
>
> --
> Message posted via CarKB.com
> http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200601/1

I had a trail buddy with a CJ7 that used to think it was funny to pull off
the vacume line that attached to the diaphram on the front axle of my YJ
when I wasn't looking. It never failed, he always waited until right before
we hit a steep incline.

Scott
91YJ
"JimG" > wrote in message
...
> You describe a common problem on YJ's. Did you also check the vacuum line
> going to the transfer case?
>
> http://www.4x4wire.com/forums/showfl...60&Main=828553
> http://www.jeeptech.com/axle/d30.html
>
> --
> JimG
> 80' CJ-7 258 CID, HEI
> 4.56 Gears, Lock-Right F&R
> 35" BFG MT on 15x10 Centerlines
> D44 Rear, D30 Front. SOA
> Dana 300 w/4:1 & Currie twin sticks
> Warn X8000i w/ dual batteries
>
> 00' TJ Sport 4.0L, 5sp
> 4.56 Gears, TrueTrac rear
> 33" BFG AT on 15x8 Eagle Alloys
> D35 Rear, D30 Front. 3" Suspension Lift
>
> "Jeff via CarKB.com" wrote in message ...
>>I have a 92 jeep wrangler and am not able to shift it into four wheel
>>drive.
>> The linkage is all good and it shifts good. Also the 4x4 light is always
>> on
>> even when not in four. So i looked at the senor and took off the cover
>> where
>> the fork and the bearing cupler is (THe spot where u can see 4 wheel
>> drive
>> locking in) I can move the couple over by hand and 4 wheel drive will
>> work
>> then but so i was thinking that the fork wont move it over by its selve.
>> I
>> looked at all the vacuum hoses and I bought a new Vacuum diaphram
>> thinking it
>> was just low vacuum but that didnt help either.
>>
>> --
>> Message posted via CarKB.com
>> http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200601/1
>
>

I am thinking you are talking about the front axle disconnect?

That would mean you need to open it back up and apply vacuum direct to
the shift motor to see if the fork moves. It is possible the diaphragm
is torn inside the unit.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

"Jeff via CarKB.com" wrote:
>
> I have a 92 jeep wrangler and am not able to shift it into four wheel drive.
> The linkage is all good and it shifts good. Also the 4x4 light is always on
> even when not in four. So i looked at the senor and took off the cover where
> the fork and the bearing cupler is (THe spot where u can see 4 wheel drive
> locking in) I can move the couple over by hand and 4 wheel drive will work
> then but so i was thinking that the fork wont move it over by its selve. I
> looked at all the vacuum hoses and I bought a new Vacuum diaphram thinking it
> was just low vacuum but that didnt help either.
>
> --
> Message posted via CarKB.com
> http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200601/1

Watch your friends, and your enemies will never bother you.
God Bless America, Bill O|||||||O
http://www.billhughes.com/

reconair wrote:
>
> I had a trail buddy with a CJ7 that used to think it was funny to pull off
> the vacume line that attached to the diaphram on the front axle of my YJ
> when I wasn't looking. It never failed, he always waited until right before
> we hit a steep incline.
>
> Scott
> 91YJ