4WD problems on '95 YJ
 

I have a '95 Jeep Wrangler and I have been troubleshooting the four
wheel drive system lately. I can move the shift lever as it should, I
put a new transfer case vaccuum switch on it, I pulled all the vaccuum
lines and tested them, I do get vaccuum down to the motor itself and it
feels ok, I tested the wires going down to the motor and I have source
voltage. Is there anything else I can do besides through a $100 axle
shift motor? I would like that as a last result. Is there an electrical
switch on the transfer case that could be the problem? I checked the
4WD light bulb and its ok. Can a low transfer case fluid level cause
any of this? I would think the light would at least come on if the
motor was working correctly. I'm at a loss, I would rather not put a
motor on it, but if that is what it is.... Thanks for the help


'95 Jeep Wrangler
4" RE suspension lift
1" shackle lift
3" body lift
35" M/T MTX's
4.88's with front Detroit Trutrac

Re: 4WD problems on '95 YJ
 

Have you actually jacked up a front wheel after shifting it into
four wheel and have the tire free? If the vacuum motor gets vacuum but
still doesn't engage then I believe it's time to make it mechanical:
http://www.bc4x4.com/tech/2002/d30shiftmotor/ or:
http://store.yahoo.com/collinsbros/4x4psilok.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

big95yj wrote:
>
> I have a '95 Jeep Wrangler and I have been troubleshooting the four
> wheel drive system lately. I can move the shift lever as it should, I
> put a new transfer case vaccuum switch on it, I pulled all the vaccuum
> lines and tested them, I do get vaccuum down to the motor itself and it
> feels ok, I tested the wires going down to the motor and I have source
> voltage. Is there anything else I can do besides through a $100 axle
> shift motor? I would like that as a last result. Is there an electrical
> switch on the transfer case that could be the problem? I checked the
> 4WD light bulb and its ok. Can a low transfer case fluid level cause
> any of this? I would think the light would at least come on if the
> motor was working correctly. I'm at a loss, I would rather not put a
> motor on it, but if that is what it is.... Thanks for the help
>
> '95 Jeep Wrangler
> 4" RE suspension lift
> 1" shackle lift
> 3" body lift
> 35" M/T MTX's
> 4.88's with front Detroit Trutrac

Re: 4WD problems on '95 YJ
 

Have you actually jacked up a front wheel after shifting it into
four wheel and have the tire free? If the vacuum motor gets vacuum but
still doesn't engage then I believe it's time to make it mechanical:
http://www.bc4x4.com/tech/2002/d30shiftmotor/ or:
http://store.yahoo.com/collinsbros/4x4psilok.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

big95yj wrote:
>
> I have a '95 Jeep Wrangler and I have been troubleshooting the four
> wheel drive system lately. I can move the shift lever as it should, I
> put a new transfer case vaccuum switch on it, I pulled all the vaccuum
> lines and tested them, I do get vaccuum down to the motor itself and it
> feels ok, I tested the wires going down to the motor and I have source
> voltage. Is there anything else I can do besides through a $100 axle
> shift motor? I would like that as a last result. Is there an electrical
> switch on the transfer case that could be the problem? I checked the
> 4WD light bulb and its ok. Can a low transfer case fluid level cause
> any of this? I would think the light would at least come on if the
> motor was working correctly. I'm at a loss, I would rather not put a
> motor on it, but if that is what it is.... Thanks for the help
>
> '95 Jeep Wrangler
> 4" RE suspension lift
> 1" shackle lift
> 3" body lift
> 35" M/T MTX's
> 4.88's with front Detroit Trutrac

Re: 4WD problems on '95 YJ
 

Have you actually jacked up a front wheel after shifting it into
four wheel and have the tire free? If the vacuum motor gets vacuum but
still doesn't engage then I believe it's time to make it mechanical:
http://www.bc4x4.com/tech/2002/d30shiftmotor/ or:
http://store.yahoo.com/collinsbros/4x4psilok.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

big95yj wrote:
>
> I have a '95 Jeep Wrangler and I have been troubleshooting the four
> wheel drive system lately. I can move the shift lever as it should, I
> put a new transfer case vaccuum switch on it, I pulled all the vaccuum
> lines and tested them, I do get vaccuum down to the motor itself and it
> feels ok, I tested the wires going down to the motor and I have source
> voltage. Is there anything else I can do besides through a $100 axle
> shift motor? I would like that as a last result. Is there an electrical
> switch on the transfer case that could be the problem? I checked the
> 4WD light bulb and its ok. Can a low transfer case fluid level cause
> any of this? I would think the light would at least come on if the
> motor was working correctly. I'm at a loss, I would rather not put a
> motor on it, but if that is what it is.... Thanks for the help
>
> '95 Jeep Wrangler
> 4" RE suspension lift
> 1" shackle lift
> 3" body lift
> 35" M/T MTX's
> 4.88's with front Detroit Trutrac

Re: 4WD problems on '95 YJ
 

It's a vacumn shift motor, the electrical line is only for running the
light on the dash. The motor is controlled by the vac switch on the
transfercase that you already replaced. 1st thing is to make sure that
when you switch from 2wd to 4wd and back that the vac switches between
the 2 vac lines going to the shift motor on the axle.

As Bill mentioned, make sure that the axle is doing/not doing what it is
supposed to. Jack up the right front wheel, put transfercase in 2wd,
start engine to get some vacumn, wheel should spin free. Pull shift
lever into 4wd HI, jocky the wheel a bit with the engine running, it
SHOULD pull in and lock the wheel. If it doesn't pull in, the shift
motor is bad or you have a jammed shift fork/shift dog. If so, take off
the shift motor and verify that the shift dog moves back and forth and
that the shift fork fits over the shift dog. You should be able to make
the shift fork move back and forth by moving the TC lever.

The worst case is if the wheel seems to grab something and get hard to
turn but still turns when the transfer case is in 4wd. That means that
the shift motor engaged but the transfer case does not. That MIGHT be
just a linkage adjustment or it might mean serious trouble in the TC.



big95yj wrote:
> I have a '95 Jeep Wrangler and I have been troubleshooting the four
> wheel drive system lately. I can move the shift lever as it should, I
> put a new transfer case vaccuum switch on it, I pulled all the vaccuum
> lines and tested them, I do get vaccuum down to the motor itself and it
> feels ok, I tested the wires going down to the motor and I have source
> voltage. Is there anything else I can do besides through a $100 axle
> shift motor? I would like that as a last result. Is there an electrical
> switch on the transfer case that could be the problem? I checked the
> 4WD light bulb and its ok. Can a low transfer case fluid level cause
> any of this? I would think the light would at least come on if the
> motor was working correctly. I'm at a loss, I would rather not put a
> motor on it, but if that is what it is.... Thanks for the help
>
>
> '95 Jeep Wrangler
> 4" RE suspension lift
> 1" shackle lift
> 3" body lift
> 35" M/T MTX's
> 4.88's with front Detroit Trutrac
>

Re: 4WD problems on '95 YJ
 

It's a vacumn shift motor, the electrical line is only for running the
light on the dash. The motor is controlled by the vac switch on the
transfercase that you already replaced. 1st thing is to make sure that
when you switch from 2wd to 4wd and back that the vac switches between
the 2 vac lines going to the shift motor on the axle.

As Bill mentioned, make sure that the axle is doing/not doing what it is
supposed to. Jack up the right front wheel, put transfercase in 2wd,
start engine to get some vacumn, wheel should spin free. Pull shift
lever into 4wd HI, jocky the wheel a bit with the engine running, it
SHOULD pull in and lock the wheel. If it doesn't pull in, the shift
motor is bad or you have a jammed shift fork/shift dog. If so, take off
the shift motor and verify that the shift dog moves back and forth and
that the shift fork fits over the shift dog. You should be able to make
the shift fork move back and forth by moving the TC lever.

The worst case is if the wheel seems to grab something and get hard to
turn but still turns when the transfer case is in 4wd. That means that
the shift motor engaged but the transfer case does not. That MIGHT be
just a linkage adjustment or it might mean serious trouble in the TC.



big95yj wrote:
> I have a '95 Jeep Wrangler and I have been troubleshooting the four
> wheel drive system lately. I can move the shift lever as it should, I
> put a new transfer case vaccuum switch on it, I pulled all the vaccuum
> lines and tested them, I do get vaccuum down to the motor itself and it
> feels ok, I tested the wires going down to the motor and I have source
> voltage. Is there anything else I can do besides through a $100 axle
> shift motor? I would like that as a last result. Is there an electrical
> switch on the transfer case that could be the problem? I checked the
> 4WD light bulb and its ok. Can a low transfer case fluid level cause
> any of this? I would think the light would at least come on if the
> motor was working correctly. I'm at a loss, I would rather not put a
> motor on it, but if that is what it is.... Thanks for the help
>
>
> '95 Jeep Wrangler
> 4" RE suspension lift
> 1" shackle lift
> 3" body lift
> 35" M/T MTX's
> 4.88's with front Detroit Trutrac
>

Re: 4WD problems on '95 YJ
 

It's a vacumn shift motor, the electrical line is only for running the
light on the dash. The motor is controlled by the vac switch on the
transfercase that you already replaced. 1st thing is to make sure that
when you switch from 2wd to 4wd and back that the vac switches between
the 2 vac lines going to the shift motor on the axle.

As Bill mentioned, make sure that the axle is doing/not doing what it is
supposed to. Jack up the right front wheel, put transfercase in 2wd,
start engine to get some vacumn, wheel should spin free. Pull shift
lever into 4wd HI, jocky the wheel a bit with the engine running, it
SHOULD pull in and lock the wheel. If it doesn't pull in, the shift
motor is bad or you have a jammed shift fork/shift dog. If so, take off
the shift motor and verify that the shift dog moves back and forth and
that the shift fork fits over the shift dog. You should be able to make
the shift fork move back and forth by moving the TC lever.

The worst case is if the wheel seems to grab something and get hard to
turn but still turns when the transfer case is in 4wd. That means that
the shift motor engaged but the transfer case does not. That MIGHT be
just a linkage adjustment or it might mean serious trouble in the TC.



big95yj wrote:
> I have a '95 Jeep Wrangler and I have been troubleshooting the four
> wheel drive system lately. I can move the shift lever as it should, I
> put a new transfer case vaccuum switch on it, I pulled all the vaccuum
> lines and tested them, I do get vaccuum down to the motor itself and it
> feels ok, I tested the wires going down to the motor and I have source
> voltage. Is there anything else I can do besides through a $100 axle
> shift motor? I would like that as a last result. Is there an electrical
> switch on the transfer case that could be the problem? I checked the
> 4WD light bulb and its ok. Can a low transfer case fluid level cause
> any of this? I would think the light would at least come on if the
> motor was working correctly. I'm at a loss, I would rather not put a
> motor on it, but if that is what it is.... Thanks for the help
>
>
> '95 Jeep Wrangler
> 4" RE suspension lift
> 1" shackle lift
> 3" body lift
> 35" M/T MTX's
> 4.88's with front Detroit Trutrac
>

Re: 4WD problems on '95 YJ
 

Thanks for the good tips! I did do the check by lifting the vehicle and
seeing if the wheel will lock. It doesn't :( I pulled the motor off
after finding a website that gives instructions on how to convert the
motor into a mechanical shift for under $26! I peeled the cover of the
vaccuum portion of the motor and sure enough, there was rust and other
crud inside, along with a hole in the diaphram. The website for that
conversion is http://home.earthlink.net/~stevenschreiber/cabledis.htm.
I have begun the conversion and I am getting the supplies from the bike
shop tomorrow. I am assuming that I should just place vaccuum plugs
over all of the connections that are now going to be out of service, as
the website does not say. Thanks again for the help and I will let you
know how the mechanical version fairs.

Re: 4WD problems on '95 YJ
 

Thanks for the good tips! I did do the check by lifting the vehicle and
seeing if the wheel will lock. It doesn't :( I pulled the motor off
after finding a website that gives instructions on how to convert the
motor into a mechanical shift for under $26! I peeled the cover of the
vaccuum portion of the motor and sure enough, there was rust and other
crud inside, along with a hole in the diaphram. The website for that
conversion is http://home.earthlink.net/~stevenschreiber/cabledis.htm.
I have begun the conversion and I am getting the supplies from the bike
shop tomorrow. I am assuming that I should just place vaccuum plugs
over all of the connections that are now going to be out of service, as
the website does not say. Thanks again for the help and I will let you
know how the mechanical version fairs.

Re: 4WD problems on '95 YJ
 

Thanks for the good tips! I did do the check by lifting the vehicle and
seeing if the wheel will lock. It doesn't :( I pulled the motor off
after finding a website that gives instructions on how to convert the
motor into a mechanical shift for under $26! I peeled the cover of the
vaccuum portion of the motor and sure enough, there was rust and other
crud inside, along with a hole in the diaphram. The website for that
conversion is http://home.earthlink.net/~stevenschreiber/cabledis.htm.
I have begun the conversion and I am getting the supplies from the bike
shop tomorrow. I am assuming that I should just place vaccuum plugs
over all of the connections that are now going to be out of service, as
the website does not say. Thanks again for the help and I will let you
know how the mechanical version fairs.