1986 Jeep cherokee Pioneer...4x4 problems
Knight
I am new to the jeep world...I just bought an 86 cherokee pioneer for a
hunting/fishing vehicle. (and play of course) I have nothing when I switch
my "select trac" 4x4 switch. I know it may be somewhere in a vaccum line but
any idea where to start? I have worked on trucks before but never 4x4 on a
jeep. its an automatic with a 2.5. Also when I shift from 4H to Neutral to
4L there is no change. no neutral or anything its almost like its not even
there. Any help would be great. Thank you very much.
Tracy
please respond to the address below only. Thanks
tkn...@usacops.com
Mike Romain
I have seen a few snapped because the owner never used 4x4 so the first
time someone tried, the seized up linkage snapped or the pivot bolt let
loose.
I would start by looking down under the shifter on the drivers side.
The linkage is open and visible there.
The Jeep 'does' have a vacuum lock on the front axle, but that has no
bearing on the shifter not finding total neutral in the transfer case.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Knight
getting 4 wheel drive at all. when I switch the lever to 4 wheel I can hear
a slight air pressure sound, but nothing kicks in. Still nothing on the
shifter either.. all my shifter has is for 4 high and 4 low so in order for
that to work at all I am assuming that the lever for 4 wheel would have to
engage first. Vacuum problem?
Thanks again Mike.
"Mike Romain" <rom...@sympatico.ca> wrote in message
news:4125FDE8...@sympatico.ca...
Mike Romain
hooks in the front wheel drive, but...
The main transfer case shifter has to work.
I do not understand your shift pattern description. I have 'command
trac in my 88 and it has 2 wheel drive when the lever is pushed forward,
next is 4 high, then neutral, then over and all the way back for 4 low.
If you have 'select trac' you should have those settings plus a 'full
time 4x4' setting.
The transfer case must have a neutral. If you put the t-case in
neutral, the Jeep is in neutral no matter what gear you select.
Mike
Knight
high... center is neutral and all the way back is 4 low. The only other
control I have is a switch on the center console behind my automatic
shifting lever, which is for selecting between 2 and 4 wheel drive. I hoping
that its not an internal thing. Hope that helps and thanks again.
"Mike Romain" <rom...@sympatico.ca> wrote in message
news:41263432...@sympatico.ca...
Mike Romain
Is yours a full sized Jeep?
Mike
Knight
The thing is driving me nuts too... I'll keep at it and keep you
updated...hey maybe we will both learn something new. Thanks for your help.
"Mike Romain" <rom...@sympatico.ca> wrote in message
news:41263FAF...@sympatico.ca...
Eric Shade
command trac 4wd. I got it working it is similiar but for that dang relay
switch taht puts it into 4wd that mine is mechanical. I have the Haynes
manual but it says nothing.
Eric
Knight
4 wheel drive is a few short comments about the vacuum lines. I'm going to
check on them later today and we'll see what happens... I think I am going
to pull my transfer out and check all the linkage a bit better too... not
enough time in a day to do the things I'd like to do. Anyways I'll keep this
post updated, maybe it will help someone else out as I go. Thanks again.
"Eric Shade" <aug...@hotmail.com> wrote in message
news:qzEVc.31237$cT6....@fe2.columbus.rr.com...
Knight
valve looking thing) mounted on the drivers side of my transfer case? It is
connected to what looks like part of the linkage and has a vacuum hose
running to it. Its ok if you treat me like an idiot...I dont mind as long as
I find out what it is...I think that may be where my problems are...the
linkage that runs to it appears to have some problems...such as who ever the
idiot was that I bought this jeep from decided a small piece of wire would
be a dandy little thing to hold the linckage together with... Anyways Can
anyone help? Oh by the way...my Jeep does not have vacuum lines running to
the passangers side of the front axle assembly.....go figure. Thanks again
everyone and help if ya can.
"Knight" <tkn...@usacops.com> wrote in message
news:10ieo7p...@corp.supernews.com...
Richard
Pioneer (used). I had the same problem and the dealer (warranty) checked it
out and gave me a new tire. It states right in the manual that the tires
must all be of the same size and wear. It worked for me, check your tires
"Knight" <tkn...@usacops.com> wrote in message
news:10ibqip...@corp.supernews.com...
Douglas Gavilanes
Check the vacuum harness mounted near the left firewall (when you're
facing the engine compartment). The harness has a few lines terminating
in what look like check valves / disk filters. 9 times out of 10, that
specific short harness has become damaged / leak ridden (in YJs from
battery acid, in '86 XJs from being ancient - hey, don't get mad - I
have one, too - a 2.8L Chief gutless wonder on it's 3rd engine at 250K
miles), preventing the vacuum switch on the front diff from engaging.
Also, before checking the harness mentioned above, perform step one
(sorry, my brain is out of sequence) and crawl under the front end and
make sure that the vaccum hose connector hasn't become knocked loose
from the vacuum switch connector - it's happened to me a few times, and
the harness went south only once, at about 180K, in my case.
If the light on the dash isn't lighting up, the front diff switch is not
engaging at all.
Good luck.
Doug Gavilanes
Garden Grove, CA
Knight
front diff. my vacuum only runs to my transfer case and thats in 2 places...
I think I may have found the only Jeep Cherokee pioneer that was made like
this becase no one has ever heard of such a thing. Its a selec-trac which
switches from 2 to 4 only in the transfer...go figure...I do have what
appears to be a vacuum motor or what has been described to me as such, That
is loose and that is in the linkage right on the driver side of the
transfer. No idea how to change it or what to ask for to replace it with but
hey I'm one step closer huh? Oh by the way Doug I'm not mad at you about the
old comment...hell it is old. Thanks again.... info needed if anyone has one
of these old critters...or has had one in the past.
Tracy
"Douglas Gavilanes" <gavi...@earthlink.net> wrote in message
news:4140ECF9...@earthlink.net...
Jo Bo
"Select Trac" is a All wheel drive setup and the front axel is always
engaged. The transfer case has a differential in it that directs power to
the front or rear axel as needed. The Haynes book I have tries to cover too
much but shows the intrals for both the command track and Selec-trac. Since
your not even going into low range I would first check the linkage. Lots of
oil and adjustment may take care of it.
JoBo
"Knight" <tkn...@usacops.com> wrote in message
news:10l1c04...@corp.supernews.com...
Matt Macchiarolo
shouldn't have a vacuum disconnect. Only the part time Command Trac did,
IIRC.
"Knight" <tkn...@usacops.com> wrote in message
news:10l1c04...@corp.supernews.com...
Knight
wheel drive so I dove under the old jeep unhooked the linkage that is run by
vacuum and pulled it manually into 4 wheel. It works great and it states in
all the manuals and everything I have read about the select-trac that it can
be run on any surface including dry tar with the 4x4 engaged. I hope those
manuals are right because it is now an all time 4x4. For the winter and
spring anyways. Thanks again guys...I hope one day I can help you out with a
problem!
Tracy
"Matt Macchiarolo" <ma...@nospamplease.com> wrote in message
news:O7Cdnfamc7K...@comcast.com...
Mike Romain
parts wear faster under load than free wheeling, but winter is winter
after all so if something comes up worn, it is time to fix it anyway.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's