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Old 05-15-2011, 07:06 PM   #1
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First Post & a Couple Q's

Hey guys this is my first post on Wrangler forum! you can find me on JF as tewell89yj i decided to change my name on here because i have a TJ now!

For starters i have a 97 TJ 4cyl 5spd. My 4wd light didnt work when i got it, but 4wd definitely works! First i assumed it was the bulb burnt out but after doing some reading i found out that it could be the 4wd switch located on the transfer case. I was just going to bypass it with a paper clip to see if my light would then come on or not and i go look and this is what i see! I think this is the right thing someone please correct me if i am wrong...




This is what i found on q-tec for my year of wrangler that should be in the transfer case because those obviously wont go together!
http://www.quadratec.com/products/52247_01.htm

That switch is for a 97-00 and it looks like what my plug would go into, so i guess my question is what transfer case do i have and if i buy that plug will it go in and work fine? I know its just a light and i dont need it to tell if 4wd is on or not but its convenient. Also the tag on my t-case says new process gear 231

My other question is about my driveshaft, when i bought the jeep i was told that it was a "heavy duty" drive shaft. To me it looks like it was just welded together. It leaks out ofthe back of the transfer case and thats obviously not what came factory so i dont know what parts i need to fix it



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Old 05-15-2011, 07:18 PM   #2
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Yes that's definitely a "heavy duty" rear driveshaft. What you have is known as a CV (constant velocity) style driveshaft which is longer which allows for taller suspension lifts without the vibrations that would happen with the shorter factory driveshaft. You should also know that your transfer case has a SYE kit (slip yoke eliminator) installed which is a very good thing which both makes the transfer case stronger and creates more room for the longer CV driveshaft you have there now. The CV driveshaft required the SYE kit to be installed so it would fit and bolt up to your transfer case.

And yes, you have a 231 transfer case, also known as a NP-231 or an NV-231 depending on what year it was made. If the 4x4 switch you found fits a 231 t-case, it will fit yours.

And a big welcome to WF, and it's nice that you know how to post good sharp well-lighted photos that not everyone here knows how to do!

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Old 05-15-2011, 08:16 PM   #3
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Thanks Jerry! The P/O told me that the drive shaft needs balanced and around 50mph you can tell because some vibrations start! I didn't know if this was a home made drive shaft and if i took it to a shop to balance if if theyre gonna laugh at me lol. With those welds it just doesn't look like its manufacturing quality. Im used to dealing more along the lines of drag racing and not wheeling too! I am trying to figure out what i need to fix the leak thats coming from the transfer case where the silver colored round piece goes onto the black painted t-case.

As for my t-case .. i was wondering why it had the 5 male pins for the receiver and the one thats supposed to plug into that had 2 male pins. i am skeptical to spend the $17 plus shipping just to have it not work. I could totally be looking at the wrong spot in the t-case, but i looked at a diagram and im pretty sure im in the right spot. It also makes me question what t-case i have since the P/O told me it was rebuilt, are the plugs on the 01+ different looking than the 97-00?
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Old 05-16-2011, 06:19 PM   #4
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well the tag on the t-case says its from 89 ... so im assuming its a YJ transfer case
the million dollar question ..... does anyone know how to get my 4wd light to work in a TJ with a YJ t-case?
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Old 05-16-2011, 06:49 PM   #5
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Jerry correct me if I'm wrong, but it appears the 89 unit used a vacuum switch instead of electrical.
Original Replacement Parts 53001101 - 4X4 Vacuum Switch for 87-93 Jeep® Wrangler YJ - Quadratec



It could be that the vacuum one could be pulled and the electric version installed, looking at the two pictures. They both use a spring loaded ball switch and the threads look similar.
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Old 05-16-2011, 06:55 PM   #6
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The vacuum connections were only used to control a vacuum actuated disconnect on Wrangler YJs which disconnected its passenger-side axle shaft half-way along its length. The TJ uses no vacuum anything for the 4x4 part of things.

The switch used to turn the 4x4 light on and off might be the same but I have no clue about that.
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Old 05-16-2011, 07:32 PM   #7
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well here is the 2 pictures side by side and looking at the one on the right (from the YJ) that is def the one thats in mine .. thread sizes do look similar
do you think i could call quadratec and they would possibly get both out and look at them and tell me if theyre the same size? or should i just buy the TJ one and try it and return it if it doesnt work
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Old 05-16-2011, 07:35 PM   #8
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I'd go for the TJ style and bet it will work.
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Old 05-16-2011, 07:56 PM   #9
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this is my newest idea ... cut the plug off of my switch with the 2 male prongs, strip the wires and put the jeep in 4wd, after that keep sticking the wires into the plug that has the 5 male prongs until i find a combonation that lights up the 4wd light since there are only 10 possible combonations if it would work it should be pretty easy to find. then i would obviously have to make the wires attach to the YJ switch a little better.

Oh and what is the main differences in the YJ t-case and the TJ one?
I was told it was a better rebuilt t-case but everyone knows that a seller will say anything especially when the buyer was coming from 200 miles away and they would never have to see me again!
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Old 05-16-2011, 08:22 PM   #10
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Jeeper, nope that isn't going to work. The old style switch looks to be vacuum operated only, I don't see any terminals on it. If you touch something metal in the switch with the harness hot lead you'l be looking for a blown fuse somewhere.

I'm with Jerry, buy the TJ switch and give it a go.

If memory serves me there were the 207/231/and 242 cases. And the 31 and 42 could be either New Venture or New Process as the manufacturer. The 07 was an NP unit.
All were available in the Wranglers 87 thru 08.
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God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.
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Old 05-16-2011, 08:25 PM   #11
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As for a H/D version, I'm guessing the 242 was it. And from seeing the other H/D items the previous owner installed, I'd tend to believe him if he said it was a H/D unit.
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God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.
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Old 05-16-2011, 09:22 PM   #12
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face*palm ... duh! ignore the stupidity on my part
but the tag does say its a 231 from 89 so im leaning that it is a 231 but who knows! is there any obvious way to tell the difference
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1989 Jeep Wrangler YJ 4.2L 3sp Auto -- SOLD
1986 Monte Carlo SS - 7.65 @ 90 mph 1/8th mile
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Old 05-16-2011, 09:29 PM   #13
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Umm, the tag.

Sorry you left it out there hanging.


Umm, 231 relying on the old noggin, had a smooth front case.
242 had a finned case and a longer stub case. Part between the rear main case and the funnel shaped part where the drive shaft connects at the rear.
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97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.
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Old 05-16-2011, 09:34 PM   #14
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Ah yep. Here's a 242 case followed by the 231
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97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.
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Old 05-16-2011, 09:49 PM   #15
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hahaha its ok i did state that the tag does say its a 231 but ill crawl under her once again tomorrow and take a look to see!
Thanks again for all the help

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1989 Jeep Wrangler YJ 4.2L 3sp Auto -- SOLD
1986 Monte Carlo SS - 7.65 @ 90 mph 1/8th mile
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