AW4 to AX15 swap ECU / TCU question
- Thread starter Char-Broil
- Start date
Char-Broil
NAXJA Forum User
- Location
- PA
that will work for him.
wrangler ones should also be the same, the bellhousings are the same, but from what I understand the wrangler transmissions have a different clocking for the transfer case at the tail of the transmission.
wrangler ones should also be the same, the bellhousings are the same, but from what I understand the wrangler transmissions have a different clocking for the transfer case at the tail of the transmission.
Yeah I figured it would be the same. I doubt the clocking of the transmission would matter. The bellhousing should bolt up to the engine the same and the difference would be where the transmission bolts to the bellhousing. Oh, and my email still hasn't received those pictures for some reason..
You have the AX15 spacer from a '94? Would you be willing to part with it?
Oh and Char-Broil, I was going to ask about the bracket for the t-case linkage that bolts to the underside of the transmission tunnel. I have the actual linkage arms and the bracket that bolts to the transmission. But I don't have the rectangular shaped one that bolts to the Jeep. Does that one have to be from an AX15? Or will even the ones from a Jeep with the BA-10 work? There are plenty of those in the local junk yard, but I'm not sure if I'll be able to find one with an AX15.
Char-Broil
NAXJA Forum User
- Location
- PA
My guess would be the BA-10 would would work. I will try to get you a measurement for where the bushing hole is on the AX-15 piece, because as you can see in the pictures in my writeup the one for the aw-4 is in the center and the ax-15 one is way at the back end of the bracket. You could just re-drill the bracket for the aw-4 and mount the bushing further back. I will get you some pics and measurements in a couple days here.
Ok thanks. I was wondering about just re-drilling it. The only problem is it might be kinda hard to get it in the right spot without knowing for sure where the hole is supposed to be. I got my AX15 pulled apart last night. Everything is actually in very good condition. Now I'm trying to decide if I want to go ahead and rebuild it anyway while it is out and already apart. It is a very stout transmission, especially for a relatively light vehicle like an XJ.
Char-Broil
NAXJA Forum User
- Location
- PA
you can re-drill it, it doesn't have to be exact, if it's within a 1/4" it should be fine. i can't think of a reason you would regret rebuilding the ax-15. any ideas how many miles on it? mine has 230k+ no rebuild
$700later
NAXJA Forum User
- Location
- Jacksboro TN
my ax-15 has 208k and still works like new.
Yeah at least I'll know everything it is good for a long time. I'm not sure how many miles are on it but the guy I got it from said it was high mileage and there seemed to be quite a bit of brass and that grey goopy metal material you see in high mileage transmissions at the bottom of it. So I'll do that and start collecting the rest of the needed parts.
$700later
NAXJA Forum User
- Location
- Jacksboro TN
hmm yeah maybe it could use a rebuild if it had a lot of metal shavings in it
A '96 XJ with an AX15 came into the shop at work today. I was checking it out and it looks like the clutch housing spacer is exactly the same as the Wrangler ones I found on ebay. So I'm gonna get one of them and that part will be out of the way. I drove it onto the lift and now I really can't wait to get mine installed :rof:
Hey Char-Broil, is there any way you can take some pictures of the pedal assembly under the dash? I would like to get an idea of how it all fits together under there. Also, on the clutch pedal is there supposed to be a spring that makes it return? Or does the pressure from the master cylinder just push it back out?
Char-Broil
NAXJA Forum User
- Location
- PA
sorry to dissappear on ya...yeah i will try to get some decent pictures for you. hard place to photograph clearly though!
Haha no problem. It's a hard place to work on too. What a pain
Oh yeah and also have you already tried the cruise control cancel? In the writeup you said by wiring that extra brake switch to the NSS wiring it would also cancel the cruise control if you push the clutch pedal. Did you try it and see if it would actuall cancel? I've been looking at the schematics and from what I can tell it wouldn't do anything to the cruise because there is no actual wiring from the NSS to the cruise control. It seems you would have to splice the clutch switch into the wire on the brake switch that is for the cancel. Unless it cancels it in the PCM when it senses park/neutral, then it makes sense.
Char-Broil
NAXJA Forum User
- Location
- PA
Yeah I should change that in the writeup. With the auto PCM it did cancel because of it sensing park/neutral. On the manual PCM it obviously does not but it also doe not freak out as bad if you push the clutch in (though I still wouldn't reccomend it. Pushing cancel on the steering wheel works though as does the brake pedal.
Ok. Well if you do want to make it cancel with the clutch pedal you can splice one of the two wires used on the clutch switch you used into the White/Pink wire on the factory brake switch. That should cancel the cruise when the clutch pedal is pushed. That is probably what I will do.
I finally got my AX rebuilt. Due to my lack of paying attention while using the press I ended up dumping another $200 into it :doh: New input shaft, new 2nd speed gear, new 5th speed gear (mainshaft side), and a second 5th gear synchro. Ugh. But I got my clutch pedal assembly built much like yours, Char Broil, and I just need to get the few remaining parts. Do you happen to know the size and thread pitch of the bolts used for the flywheel?
