swaping a 97 4.0 into a 94 grand cherokee?
#1
Newbie
Thread Starter
Join Date: Jul 2012
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
swaping a 97 4.0 into a 94 grand cherokee?
ok for starters im a newbye to this form , and pretty new to the world of jeeps
ok so i have a 94 grand cherokee with the 4.0 (factory) auto trans with 231 xcase and with my luck it started knocking so picked up a 97 grand for the motor
what all differences are there in them? so far i noticed the 97 doesnt have a fuel return , so i know i will have to use the fuel rail off my old motor , also noticed the temp guage sending unit is not were it is on the 94 ( do i just have to drill and tap the head in the 97 ????)
also notice the throttle body on the 97 has a sensor on the right outer side but looks like the other hookups are the same on the backside like my 94 so can i just take the sensor off or do i need to use the throttle body off the 94 also???
last 2 questions i have is on the flywheel sensor will the one on the 97 plug into the 94 harness ?? and last question is my 94 has the 231 xcase in it and the 97 has the 242j in it , am i going to have any probs with swaping it into the 94? ( i plan on dropping in the engine trans and xcase out of the 97 into the 94)
I would greatly appreciate any help or info i will need to know before i pull old motor out and drop in the 97 unit so i can just drive it and enjoy my rig
ok so i have a 94 grand cherokee with the 4.0 (factory) auto trans with 231 xcase and with my luck it started knocking so picked up a 97 grand for the motor
what all differences are there in them? so far i noticed the 97 doesnt have a fuel return , so i know i will have to use the fuel rail off my old motor , also noticed the temp guage sending unit is not were it is on the 94 ( do i just have to drill and tap the head in the 97 ????)
also notice the throttle body on the 97 has a sensor on the right outer side but looks like the other hookups are the same on the backside like my 94 so can i just take the sensor off or do i need to use the throttle body off the 94 also???
last 2 questions i have is on the flywheel sensor will the one on the 97 plug into the 94 harness ?? and last question is my 94 has the 231 xcase in it and the 97 has the 242j in it , am i going to have any probs with swaping it into the 94? ( i plan on dropping in the engine trans and xcase out of the 97 into the 94)
I would greatly appreciate any help or info i will need to know before i pull old motor out and drop in the 97 unit so i can just drive it and enjoy my rig
#2
CF Veteran
Join Date: Mar 2009
Location: Tenn. and Mich.
Posts: 28,068
Likes: 0
Received 6 Likes
on
6 Posts
Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
Welcome to CF. The connectors were probably all changed over the years. You might have to install the '94s sensors into the '97 engine if the connectors don't work. JMO
The t-case swap shouldn't be an issue. You might have to swap speed sensors if the connectors are different.
The t-case swap shouldn't be an issue. You might have to swap speed sensors if the connectors are different.
Last edited by ol"blue; 07-30-2012 at 12:51 AM.
#3
CF Veteran
Join Date: Feb 2010
Location: Oroville, CA
Posts: 12,367
Likes: 0
Received 19 Likes
on
18 Posts
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
The exhaust ports on the 97 cylinder head are different, but not a big deal. Use the throttle body from the 94 along with the flexplate and the rest of the sensors.
#4
Newbie
Thread Starter
Join Date: Jul 2012
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
ok so dont try to drill and tap the head for the temp guage sending unit? ( sence the exhaust ports or different?) were would be my option to hook it up at? block drain port?
#6
Newbie
Thread Starter
Join Date: Jul 2012
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
huh interesting i dont remember unhooking any wires from there on the 97 motor today but think there is a plug in the block there , funny thing is on the 94 it has that there but isnt hooked into the harness anywhere ( it has it in the back of the head next to the valve cover) so heck i will just extend the wires on the plug and hook it up to that port there , Thanks Ol Blue
#7
CF Veteran
Join Date: Mar 2009
Location: Tenn. and Mich.
Posts: 28,068
Likes: 0
Received 6 Likes
on
6 Posts
Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
huh interesting i dont remember unhooking any wires from there on the 97 motor today but think there is a plug in the block there , funny thing is on the 94 it has that there but isnt hooked into the harness anywhere ( it has it in the back of the head next to the valve cover) so heck i will just extend the wires on the plug and hook it up to that port there , Thanks Ol Blue
Trending Topics
#8
Newbie
Thread Starter
Join Date: Jul 2012
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
when i bought my 94 the rednecks i got it from told me it had a 95 motor in it so my guess is they just used the 95 bottom end and put the 94 head on it cause there were alot of loose bolts on the motor that i had to tighten up
#10
Newbie
Thread Starter
Join Date: Jul 2012
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
yea i have been researching all night and read that on the 97 and up they used a dual funtion sensor for the one in the thermostate for the computer and temp guage so best option for me is to just run it to the port above the oil pan
#12
Newbie
Thread Starter
Join Date: Jul 2012
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
yes it has 2 separate plugs on the 94 for the sending units , thought about if i could splice the guage sending unit wires into the computer one to use the one the 97 motor has in the thermostat , but i doubt that will work so will just run it to the port instead
#14
MJ>XJ
Join Date: Mar 2009
Location: Griffin, G.A.
Posts: 17,836
Likes: 0
Received 4 Likes
on
3 Posts
Year: 1990
Model: Comanche
Engine: 4.0 I6
This should be a easy task... Yall makin it difficult... Lol... Just have at it... U got the skills to figure it out as u go... I can tell that already...
Research which transfercase u want though... They will both work with the linkage from the same vehicle they came from... They are very different but both will bolt up...
Research which transfercase u want though... They will both work with the linkage from the same vehicle they came from... They are very different but both will bolt up...
#15
Newbie
Thread Starter
Join Date: Jul 2012
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
well went and looked at my 97 motor yesterday on my way to work and of course my block doesnt have a hole there above the oil pan , has the casting like there could be a hole thou , so idk if i want to drill and tap it or just hook up to the block drain port
would think they wouldnt of changed things around on these motors so much over just a few years but guess so lol
would think they wouldnt of changed things around on these motors so much over just a few years but guess so lol
Thread
Thread Starter
Forum
Replies
Last Post
lozo63
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
3
08-27-2015 05:45 PM
03cheroke
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
2
08-27-2015 06:07 AM
Katt Dogg
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
1
08-25-2015 08:03 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)