Spencer_P

The engine is the one thing I don't need.

Both are auto transmissions. And currently my reverse lights don't work haha so I'll probably clean it while its out.

Red1992XJ

The reverse lights may not be working if the Neutral safety switch is not clean. Best to look into rebuilding that while you are working on everything.

You should have no problem swapping over the transmission, transfer case, front axle, and etc.

Being that the engine will be staying, you should not have to worry about the OBD differences from the parts vehicle.

Worst case, you can always keep an eye out for another parts jeep and part this one (94) out.

Spencer_P

Thanks for the help and info everyone.

awg

Yes..same TCM part num

as far as I can tell, the 94 and 96 share all wiring, transmission function, body parts etc etc...except OBD2 vs OBD1 engine harness and PCM

The 94-96 TCM is in total control

from 97 the PCM is also involved with trans

I am in Australia though, I believe the USA had some slight variation to what we have, such as instruments

lawsoncl

I think 94 and 96 are both OBDI, at least the US version. 97+ the trans computer still controls the shifting. The only connection to the PCM is the OBD bus for diagnostics.

awg

if so, all the better for the OP..totally easy way to tell..do they have an OBD2 port

Spencer_P

My 96 does.

again though the 94 doesn’t have an engine and I just need front axle, trans, transfer case, and such from it.

Red1992XJ

I think even though 96 is an OBD2 system, I don't think that the trans (TCM) is connected with the computer. That I believe happened in 1997 with the redesign.

There may be a sensor or two that may be different, but it should be something that could be spliced or changed as needed.

awg

All the above is correct, the sensors have a different shaped plug end OBD1 vs OBD2

lawsoncl

There is a misconception that the trans computer was integrated into the ECM, when it moved to the drivers side of the dash and the connection changed. The only connection between the trans computer and the ECM is the OBD bus connection, and they share the TPS sensor output. The trans computer has it's own speed, brake pedal, etc sensors and controls the shifting. The ECM has no role in controlling the transmission.

The trans computer itself has had a few changes over the years. Changing the output speed sensor from 1x to 4x, adding a front input speed sensor (somewhat misnamed since it's not actually measuring the input shaft, and doesn't work in 4th gear), eliminating the power/comfort switch, changing from serial to obd1 to obd2 on the diagnostic lines, and the shape of the case and connector changing when it moved from the passenger side to the drivers side of the dash.

Spencer_P

Well the 94 sold before I could get it or my parts today. Better luck next time I guess

Spencer_P

I need some more advice from this thread. There's a 96 that popped up for $400, it has 180,xxx miles and an engine knock. I asked him if the transmission and 4wd worked and he said he hasn't driven it, he bought how it is and got the engine ready to pull but then didn't have the money to continue. So do I go through with it because it's only $400 and hope everything works? Also I'd have to rent a truck and dolly because it's about an hour and a half away so thats another $200 but still only $600 if everything works.

Spencer_P

There's also a few comanches calling my name... but one project at a time...

Spencer_P

The guy said he ran the engine for about ten minutes and it has a spun bearing and is pouring oil somewhere. He said the previous owner was driving it when it overheated and started knocking

Red1992XJ

Honestly, for $600, its a gamble but its not that bad. Worst case scenario, you could sell it for scrap and you wouldn't be out that much money.

My guess, from what you have said, is that it would probably be ok for your needs as far as parts.