XJguy

4.3 swap is far from ideal. Back in the old days swapping in different engines in the V6 XJs was pretty common. Your best bet/easiest swap, would have been to get a 3.1 or 3.4liter from a Camaro or S-10 with fuel injection. Its the same block as the 2.8v6 but with many improvements, and more power and reliability. You can also get various high performance components from the Fiero GT since its same engine, but the Fiero's block has engine mounts in the wrong places....that would necessitate fabrication to mount in a longitudinal RWD application. http://en.wikipedia.org/wiki/GM_60-Degree_V6_engine

Check/clean connections to starter.

Just look for female pin connectors. Costs less than $3

I'm sure you can, but I wouldn't know where to begin. On Youtube there are a few videos of guys who tapped into the volume and or amp to add an auxiliary input. But if you just get a Jeep stock radio it will be much easier.....as easy as can be actually and look better.

Well it appears to be a vacuum leak or not enough vacuum after all. I used zip ties to tighten the connection yet still no 4wd. Then I opened up that little hole on top of the assembly I don't know if its for lubing or inspection, but I was able to slide a small screw driver inside and with a little push the fork moved over and the 4wd was once again working. I drove it like that for a while and it held but after I switched back to 2wd it once again would not go back to 4wd. I don't know what the heck to make of it.

That would explain how it felt like it was coming in and out of 4wd prior to this current issue. Ill have to look into that possibility as well.

Glad to see this working for someone else. Enjoy!

Never had this issue before with my other of my Jeeps. Since this thing has a front axle disconnect I immediately suspected the vacuum motor. So I took apart the whole thing and its all working perfectly, and there is good vacuum. I put the Jeep into part time 4wd, the light comes on the vacuum is present with no leaks but I am getting no power up front. I drove for hours in the snow in 4wd on Monday, then as I approached my snow covered driveway, turning right I heard a popping noise and ever since then no more 4wd. It goes into 4low as well but still no power to the front wheels not even in reverse. can't even use the Jeep, its horrible in the snow with such a light weight @$$. Any ideas? Previous to this it did seem to pop in and out of 4wd, which I thought was just a vacuum leak, but the light always remained on until I put the lever into 2wd. BTW its a 91' swb Pioneer 4wd, 5 speed.

You're the man! Yes those are the pins! The positives get hooked to those two pins the negatives go to ground and you're set! One is a left channel one the the right. I actually pulled out the cassette mechanism to get better access and to route the wires through the radio to exit in the rear. Once hooked up I put it all back together and everything works great. PS: went to Radio shack they sell female pin connectors that will slide right over those pins for a clean good installation, no need to risk damaging things with solder.

You see the PC board that the volume control is attached to? In my radio that board is horizontal as opposed to the one in the photo which is vertical. On that board, there were vertical pins that I then connected the wires to.

What I have quickly realized is that these Jeep radios have faces that look alike but internals that are very different. My radio's guts don't look like yours. But all is not lost. While I was researching how to do this I came upon a few sites/videos where guys had connected via the volume knob. In my radio, there were actually unused pins inside (probably for radio testing/dignostics) that I was able to use with great results.

Oh cool didnt think that would ever be available at Autozone

Nice... Rusty's Offroad helped? How? Question: If since the Eliminator Archer Bros. aero package was a rare option, can't you install it to help with your aerodynamics and still qualify as being stock?

Need the latch for my sliding rear window. Also need the thing that holds the crank to the spare tire rod inside the truck.

Straighten and weld...good as new...if you need to, chase the threads as well.

Good ideas here...really nice work Shelbyluv. What I want to do is toss out the stock tank and toss out the spare tire and the assembly. Have one tank under the bed in the location where the spare tire used to be. My MJ is a Pioneer swb model. I figure the XJ tank would be easiest due to shape and the sending unit, the fact that the late models were plastic is a plus for me. But I don't care if the tank comes out of an old Buick, the better it fits and the less it hangs down the better...I want to keep that back area as high and smooth as possible since I will be mounting a rear diffuser back there to manage airflow.

Sorry I meant if I need to carry a spare tire it will be in the bed....I want to install an XJ tank under the bed where the spare goes.

Was wondering if anyone has installed a plastic XJ tank in an MJ? Mine is rotten and since I am looking for better weight distribution and won't be carrying a spare seems like a good idea.

All I can say is that there are probably similarities in all radios, Ive only done it to the factory Jeep cassette radio from the 91 Comanche.

Just discovered an added bonus. Plugged my GPS enabled phone into the line and music from the radio played as normal, but whenever the voice navigation spoke the radio would mute and the voice could be heard, then go back to the music once done....win!

If that father and son is who I think it is, they are no longer going after the speed record (son lost interest) and the MJ has been or will be converted to a drag racer. I was in contact with the dad giving him some tips in aero.

Bizarre...who would have thought that they made several radios that look identically but were totally different on the inside! Ok, well I will do the best I can....see that vertical board that the volume control is connected to? Look for 2 pins that stick out that are fairly close to each other. If it is anything like mine, there will be pins like this in a few locations, we are looking specifically for one that is soldered to the board that the volume control is on. You may want to remove the cassette assembly to make things easier. The whole thing comes out as a complete assembly with a just a few screws and disconnecting a few plugs and the radio face (Remove volume and fader knobs, then push in tabs holding it in on the sides...comes out easily).

Does yours look like this? I just realized that there are 2 very similar radios...I have both but did the mod to the one that does not have the CLK (clock) button. I knew I thought I noticed something different in my original 86 XJ radio and this 91 Comanche radio. I think the one pictured here is made by Alpine, whereas the one I have in the MJ is made by Mitsubishi. They look nearly identical except for the CLK button and the SEEK MPS button...and maybe thats why the guts of yours looks different. I don't even know where my 86 XJ radio is since its completely dismantled and in boxes so I can't even take a look and see.

Yes it will work on any radio, but the procedures will vary and I really can't guide you there. If you look on youtube there are a few guys that this with other methods and radios. Automan, is that the factory Jeep radio? If so take a photo directly from above it. Focusing specifically on the left side where the volume control is.

I should have taken pics while it was apart but I didn't. If I take a pic now all you will see is an audio wire/plug coming out from where the hand e-brake is. If you guys decide to do it, and snap pics of your radio guts I will gladly guide you through it. Its very easy, don't hesitate to do it. The whole thing will take you maybe 15minutes.