Originally Posted by fantic238

What year is the cherokee?
Check if there is the tranny computer under the passenger side lower dash panel (knee hight).
This is a very interesting swap please post some pictures. I am very curious of how the RD28 was mated to the AW4. I probably know why it is not going faster. The tranny stays in first gear right? It is very simple. Since the 4.0l has been removed the TPS (throttle position sensor) is missing and the tranny needs that information to shift through gears. You have a couple of options: the elegant and the redneck. The elegant solution is you find the Nissan TPS and, check that the output voltage is a descending range from approximately 5 volts to 0 (when you accelerate, volts go down), split the wire and give the signal to the tranny. Elegant option 2: you go to the junk jard and buy a cherokee TPS, build a bracket on the engine and hook it up with a little arm to the nissan throttle.
Redneck solution you unplug the tranny computer and shift manually through gears,(1-3-4, no 2) then later on you build a manual switch to shift manually through all the gears.
It has no power? well it's a 2.8 and has just 100hp and 132lb.ft of torque... lol Please upgrade i am curious.

Originally Posted by cherokee_ph

thank you for the info!
i dont know about the year.. but it has AW4 trany, and used to be V6 gas engine 4.0 liter
(does that help?)

yes, the TCU was not connected after all...
im not sure if my research is right.. but it says that if the trany isn't getting a signal it automatically is in 4th gear when in D..? which sort of makes sense.. it cant go up but on a flat road it is able to gain speed.. after awhile.

the transplant was been done by the previous owner.. but we will pull out the engine again for some maintenance.. (since it was in storage for awhile)
will post pictures of disassembly and reassembly

everyone who's seen the transplant seems to think that the engine will have the power to bring the rig..(there are 2 versions to the RD28 the 4cylinder and the 6cylinder.. we have the 6 cylinder)
the engine used to be used on a NISSAN PATROL..which is considerably heavier than the Cherokee..

after TCU has been rewired.. i am planning to tap into it and install a manual shifter.. 1-2-3-4.. has anyone tried it? will it be a good idea..?
(planning to go trailing with this rig)

THANK YOU AGAIN!

Originally Posted by Aldakoopa

Here's a quick question or two; I have a 1987 Cherokee Pioneer with the 4.0. My starter turns but doesn't turn the engine, I'm assuming it doesn't engage into the flywheel. It sounds very weak and slow.. like every old Chrysler Jeep and Dodge Ram I've heard, but my other Cherokee was also a 4.0 87 and didn't sound like the same starter, but I believe that starter is shot so I can't use it. Anyway, I am looking at a new starter, correct? And if so, I have an 86 Wagoneer with the sad, anemic little 2.8 that I had replaced the starter on shortly before the transmission died on it. Would the starter from the 2.8 work on the 4.0?

Originally Posted by bakerg

Okay quick question. I have a 90 Cherokee 4.0 5 speed that I want to do a clutch in. The production date is 1 of 90. There are two differant cluchtes that it could be. How do I tell what tranny I have.

Originally Posted by fantic238

Are you in Britain or in Canada? They never sold the Patrol In the states. The 4.0 is an in line not a V6.
Telling me the year of your vehicle (facelift or not?) would help me to know wether the TCU is a self standing unit or it was integrated in the Engine Computer (therefore gone).
You're talking about the RD28T (turbo), it has 125hp and 188lb.ft torque, if it came from a Patrol GR maybe a little more, but still less than a AMC4.0 (177hp and 220lb.ft). The RD28T is basically the minor son, less fuel consuming (but still a lot for a diesel) of the SD33T, that was mounted on the older Nissan Patrol and on the International Scout II (and curiously also in the jeep CJ10A).
If the TCU is unplugged you should be able to shift in 1st gear if you move the lever all the way down to 1-2 position.
There are plenty of writeups about the manual shifter, it has been done before, especially the Wrangler guys who have swapped the AW4 in place of the stick.
I suggest you regear to 4.10 ratio because the 3.55s will suffer with the diesel.

Originally Posted by Jeep95

So Idk much about transfer cases. I'm kinda new to jeeps but oh do I love em. I love my jeep. I'm always putting money into it to make it better. But anyways my transfer case is going out. I have a 95 xj auto and 4x4 of course. Lol but anyways will a 99 xj np231 case work on my jeep? Mine said 231 j idk if there was a big dif I just don't wanna buy it and find out it won't work on it.

Originally Posted by JTS22XJ

I need someone to send my a link or something to find either a whole fenderflare set including mounting bolts for a 1997 xj 4door or tell me where i can get new bolts or what to use in place of them.

I went to take off the flare to paint them because the do not match the black bumpers, but i keep snapping bolts! and before i countinue i wanna make sure i can repleace them.. so please help me !