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conversion to 4x4

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Old Dec 8, 2021 | 05:43 PM
  #1  
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From: Iowa
Year: 1993
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Default conversion to 4x4

i have a 93 2 door 2wd cherokee and just purchased a 2000 cherokee 4x4 can i swap the drive train out of the 2000 into my 93 the 93 is a 5 speed and the 2000 is a auto. do i need to swap the computer and if so will the 2000 be a plug and play thanks
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Old Dec 8, 2021 | 05:49 PM
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Year: 1998
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Engine: 4L
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That's a huge can of worms. You'll need the TCU, ECU, and a WHOLE bunch of other stuff. But, you already have it all, so that helps.

Sounds like you'll pretty much do a body swap. Swapping the front axle over and finding a good AX15 to swap in would be a hell of a lot easier, but you must have your reasons for wanting the automatic.

So to answer the question, it's not just plug and play.
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Old Dec 8, 2021 | 05:52 PM
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From: Iowa
Year: 1993
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I picked up the 2000 for 500 has a noise in the 4.0 so was just thinking of swapping it to a 4x4
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Old Dec 8, 2021 | 05:59 PM
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I dont think there could be a worse match for a donor.... I would sell one or the other and find a better match.
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Old Dec 8, 2021 | 07:33 PM
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Wait, what do you want to swap where? The 2000 might have a bad engine (although I'd troubleshoot the noise first), and you want to swap it into the 93? Or vice-versa? The 93 doesn't have the trans computer, and you can't bolt the transfer case up to the 2wd manual transmission.
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Old Dec 8, 2021 | 07:37 PM
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Year: 1993
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looking at putting trans and transfer case along with axles from the 2000 into the 93 maybe to much work lol
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Old Dec 8, 2021 | 08:25 PM
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In order for the transmission to work, you'll need the TCU. The inputs to that TCU include an input speed sensor, an output speed sensor, the wheel speed sensor (in the transfer case) and the TPS. I also don't think the TPS from the 93 is compatible with the 2000 TCU. It's doable, but you'll need to sit down with a wiring diagram for a while to make sure everything will work. Again, not gonna be easy.

An AX15 or NV3550 from any year will swap right in with far less effort.
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Old Dec 8, 2021 | 08:31 PM
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so swap trans to another manual and both axles from the 2000 would be a lot easier
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Old Dec 8, 2021 | 08:51 PM
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Yeah it's likely that your rear axle has a 3.07 ratio. That 2000 auto will probably have 3.55 gears.

I'm not saying it's impossible to use that transmission. It's just going to require a LOT of figuring out. If you're looking for a challenge, you found it.
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Old Dec 9, 2021 | 01:13 PM
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Originally Posted by agreen
In order for the transmission to work, you'll need the TCU. The inputs to that TCU include an input speed sensor, an output speed sensor, the wheel speed sensor (in the transfer case) and the TPS. I also don't think the TPS from the 93 is compatible with the 2000 TCU. It's doable, but you'll need to sit down with a wiring diagram for a while to make sure everything will work. Again, not gonna be easy.
Getting the trans to work isn't trivial, but really that hard if you have some patience and some wiring skills. The TCU harness is mostly stand-alone down to the trans, with a harness running to the left side of the trans for the solenoids and speed sensors, and a harness going down the right to the NSS. Other wires to the vehicle will be ground (goes to the bolt by the dipstick), TPS signal (tap into the existing signal), constant power, and ignition switched power. Don't hook up the data lines, since it won't talk to the 93 engine computer, and the engine computer will be blissfully unaware. The TCU doesn't need the vehicle speed sensor in the trans, but you may have to extend the existing wires to reach the xfer case. I don't recall if the 93 had a clutch or neutral switch for starting (my 89 didn't). Also need to grab the wire for the backup lights and route to the NSS.

You'll have to grab, and potentially modify the xfer case shifter, although I think I'd go straight to an after market one instead of the funky oem design.


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Old Dec 9, 2021 | 03:25 PM
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I'm not 100% sure the 93 TPS will work with the 2000 TCU though. You're right, the trans harness is mostly standalone, but it's gonna take a little while staring at the wiring diagrams to get it right.

The shifter won't likely work across the body split. If it were 97+, you'd be in luck. I did a 4wd swap, but everything was from the same "generation". Plus and play. Went together like Legos.
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Old Dec 9, 2021 | 08:41 PM
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Originally Posted by agreen
I'm not 100% sure the 93 TPS will work with the 2000 TCU though. You're right, the trans harness is mostly standalone, but it's gonna take a little while staring at the wiring diagrams to get it right.

The shifter won't likely work across the body split. If it were 97+, you'd be in luck. I did a 4wd swap, but everything was from the same "generation". Plus and play. Went together like Legos.
Older renix had the dual output, but I'm fairly sure 1993 and 2000 both have the same 0-5 volt output signal which goes to both the ECM and TCU.
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Old Dec 10, 2021 | 06:43 PM
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Don't mean to move the response from the original question but I didn't want to start a new thread for what is effectively the same question a day later.

Now that I've moved out of the salt belt, I ditched my subaru for really clean, fairly low mile 01 cherokee. Only thing is it's a 2wd. My understanding is it isn't super hard to do a conversion but I want to know there are any year specific parts and what all I'll need.

I know I need the front axle but does the year matter? are the brakes, steering components and links the same?
Does the year of the transfer case matter?
I assume that the rear driveshaft for a d35 is different from a c8.25 so I'll need one for a c8.25, correct?
Do I need a different tail housing for the trans or do I just remove the 2wd one?
Is there anything else I missed?

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Old Dec 10, 2021 | 07:48 PM
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Originally Posted by Idratherbewheeling
I know I need the front axle but does the year matter? are the brakes, steering components and links the same?
Does the year of the transfer case matter?
I assume that the rear driveshaft for a d35 is different from a c8.25 so I'll need one for a c8.25, correct?
Do I need a different tail housing for the trans or do I just remove the 2wd one?
Is there anything else I missed?
There were a couple changes in the D30 front axles through the years, high versus low pinion, and disconnect or not. They will all bolt up. The steering knuckle and brake components changed at some point, so you have to match the year when buying rotors and calipers.

You will need a 4wd transmission as the output shaft is different. It's not just a matter of removing or swapping the tailcone. The year and original transmission of the xfer case will affect the output shaft style, and older xfer cases may have a different length input shaft with either 21 or 23 splines. (Lookup novaks page on the 231/242 input shafts)
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