Tranny issue?

Does the transfer case have different operations for the front and rear driveshaft? Cuz if I disconnected the rear drive shaft and it went away it would either be the rear axle or the clutches in the rear output of the t case....
 
here's the thing -- I know that the 247 case when it fails, fails into 2wd to the rear axle. by having no resistence from the rear axle, in theory the clutch assembly will transfer all power to the front axle, and you'll have front wheel drive -- I'm not sure whether in fact this will happen smoothly or not, but by all means, be the guinea pig ;)

I'm not altogether sure that disconnecting the rear driveshaft would necessarily provide you any information, anyways. Say that the "surge" feeling your are experiencing is indeed the rear diff, it makes sense that it would only occur in a clutch driven limited slip when power is being applied, provided it is only occurring in straight line driving, but I'm not sure. Also, if its actually your tcase, forcing the clutches to put all power to the front might make it substantially worse...

I'm thinking the only way to answer these questions is for you to give it a shot -- pulling the shaft sure isn't hard so maybe its worth a shot... :dunno:

edit: BTW, the below is from the jeepforum thread on this topic, as far as how much friction modifier should be in each axle...

XJH-007 said:
Rear D44 are suppose to have 4oz, and the front D30 takes 2.5oz. Not sure what happens if you use too much....

Have your mechanic change the front and do it right.

:cheers2:
Click to expand...
 
Last edited:
I would think so, since in theory it could transfer close to 100% of power to a single wheel, but who the hell knows?!?
 
LOL. so now we know!
 
I don't mean to be an ass, but have you posed your question at jeepforum like I suggested some time ago? Those guys (WJ forum) tend to know their shit, and there is a lot more traffic there than at NAGCA. Be specific in describing what you're experiencing and what you've already done, and I'm betting they can point you in the right direction...
 
I'm there often and didn't even see that thread. I just gave you a bump, maybe you'll get some input...
 
Took it to Jeep today, 100 bux later mechanic said its my transmission and possibly my T case. Getting rid of it tomorrow. Gonna take whatever I can get out of it and possibly get a Subaru. I'm over it.
 
Just saw this. I would start by having someone put it on a good scanner. I'm not talking codes but one that will show the graph of actual vs. commanded gear ratio and torque converter clutch application.

Does it feel about like driving over rumble strips, but on a smooth road?
 
JJacobs said:
Just saw this. I would start by having someone put it on a good scanner. I'm not talking codes but one that will show the graph of actual vs. commanded gear ratio and torque converter clutch application.

Does it feel about like driving over rumble strips, but on a smooth road?
Click to expand...

Exactly like that.... What is it?!?!
 
I feel your pain man, but dumping it when anyone that test drives it right now is going to rape you no the price if they'll take it at all, you're going to have to figure this out one way or another. And a Subaru won't insulate your from issues either -- I'm about to replace a head on Sheilas...

Take JJacobs advice, find a reputable mechanic with a scanner and see what you can see. In the end, its likely cheaper than just throwing parts at it, plus you won't take time away from your paying job working on your heep.
 
Crap, forgot to check back on this earlier. That's a torque converter clutch chatter. Could be a lot of things- high resistance to the solenoid, solenoid or spool valve issues, partially plugged filter, wrong fluid, torque converter itself.
 
hmmm. is that something that hooking it up to a computer could find out?

Is the torque converter in the T case or Trans? Ive been reading up on doing a NV242HD T case swap and I found one for cheap.

The mother also feels bad and is paying for me to take it to the dealership again tomorrow to have them really go through it and drive it now that its making the jerking often.
 
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