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Unread 05-23-2012, 03:47 PM   #1
ZeJokee
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Wj 99 4.7l 242 - AWD selection = no movement

I swapped in a 242WJ from a 01 i6 a few months ago. Everything went smoothly other than a vibration, mostly due to the case being long and drive shaft angle. Lately the vibration has increased and I am getting slight whine under 35 mph. Not very loud and all the time the vehicle is rolling, under power or not. My front drive shaft is pulled waiting to put in a new one. Today I decided to put it into awd to see if the whine is still there. Only issue is the Jeep would not move. Felt like the t-case was in neutral. If my understanding is right, it should send power to the rear wheels until they loose traction then send power to the front as well. I even put it into neutral to make sure I was actually in awd. When it is N I can hear a clanking ratching sound briefly if I rev my jeep. I replaced the shift forks and chain when I swapped it in. Everything else looked if perfect order. Fluid is full and still bright red. Am I just missing something or is the awd selection messed up in the case? If so I guess this could be the culprit of my vibration and whine.

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99 WJ Ltd, Blacked out, 4.7L, 242j Swap, 2'' BB, 245/75/16 Kuhmo Venture AT KL78, Flow Master Super 40, MagnaFlow high flow Cat, Akebono caliper upgrade, Addco rear swaybar, Westin brush guard, Moog Super Trail Boss, Rancho RS5000, Rola roof rack with dual kayak J hooks, PAC-AOEM-CHR, Sony Xplod 1200w amp, 2 Sony Xplod 12'' subs, 118,XXX miles (SOLD)
93 ZJ Ltd, Blacked out, 5.2L, Reman 46RH, Reman 242 Swap, 3.5'' IRO + 2" BB, 33x12.50r15 Mud Claw MTX radials, Bushwacker Flares, 216,XXX miles (Still parked in NC)
04 F-350 SD Crew Cab FX4 Lariat, 6.0 PSD SRW, Head studs, AFE Stage 2 SI Pro Guard 7 intake, Blue Spring mod, 150,XXX Miles

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Unread 05-23-2012, 06:48 PM   #2
ratmonkey
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Your understanding is wrong. Both outputs receive power through an open differential planetary gear set. If even one tire is completely without traction (in the air for example) you won't move as all power is sent to that tire. With no front drive shaft, all power is going to that output.
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Unread 05-23-2012, 06:55 PM   #3
ZeJokee
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Quote:
Originally Posted by ratmonkey View Post
Your understanding is wrong. Both outputs receive power through an open differential planetary gear set. If even one tire is completely without traction (in the air for example) you won't move as all power is sent to that tire. With no front drive shaft, all power is going to that output.
That's what I wasn't sure about. I knew it didn't function the same as the 247 but wasn't sure exactly how it distributes power. Thanks
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99 WJ Ltd, Blacked out, 4.7L, 242j Swap, 2'' BB, 245/75/16 Kuhmo Venture AT KL78, Flow Master Super 40, MagnaFlow high flow Cat, Akebono caliper upgrade, Addco rear swaybar, Westin brush guard, Moog Super Trail Boss, Rancho RS5000, Rola roof rack with dual kayak J hooks, PAC-AOEM-CHR, Sony Xplod 1200w amp, 2 Sony Xplod 12'' subs, 118,XXX miles (SOLD)
93 ZJ Ltd, Blacked out, 5.2L, Reman 46RH, Reman 242 Swap, 3.5'' IRO + 2" BB, 33x12.50r15 Mud Claw MTX radials, Bushwacker Flares, 216,XXX miles (Still parked in NC)
04 F-350 SD Crew Cab FX4 Lariat, 6.0 PSD SRW, Head studs, AFE Stage 2 SI Pro Guard 7 intake, Blue Spring mod, 150,XXX Miles

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Unread 05-23-2012, 07:37 PM   #4
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If you want to drive it without the front shaft, put it in 4pt.
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Unread 05-23-2012, 07:41 PM   #5
ZeJokee
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I have 2wd for that. I was just testing the t-case because I thought it functioned more like the 247. Trying to figure out if the whine is coming from the t-case or something else. Already ruled out front pinion and transmission runs fine.
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99 WJ Ltd, Blacked out, 4.7L, 242j Swap, 2'' BB, 245/75/16 Kuhmo Venture AT KL78, Flow Master Super 40, MagnaFlow high flow Cat, Akebono caliper upgrade, Addco rear swaybar, Westin brush guard, Moog Super Trail Boss, Rancho RS5000, Rola roof rack with dual kayak J hooks, PAC-AOEM-CHR, Sony Xplod 1200w amp, 2 Sony Xplod 12'' subs, 118,XXX miles (SOLD)
93 ZJ Ltd, Blacked out, 5.2L, Reman 46RH, Reman 242 Swap, 3.5'' IRO + 2" BB, 33x12.50r15 Mud Claw MTX radials, Bushwacker Flares, 216,XXX miles (Still parked in NC)
04 F-350 SD Crew Cab FX4 Lariat, 6.0 PSD SRW, Head studs, AFE Stage 2 SI Pro Guard 7 intake, Blue Spring mod, 150,XXX Miles

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Unread 05-23-2012, 07:43 PM   #6
lestatsghost
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Quote:
Originally Posted by ezflip
If you want to drive it without the front shaft, put it in 4pt.
X2 on that. In 4ft it is an open differential free to send power where it needs. 4pt modes lock in the drive shafts so equal power front and rear no matter if the front axle is off the ground or no drive shaft.
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Unread 05-23-2012, 07:43 PM   #7
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Quote:
Originally Posted by ZeJokee View Post
I have 2wd for that. I was just testing the t-case because I thought it functioned more like the 247. Trying to figure out if the whine is coming from the t-case or something else. Already ruled out front pinion and transmission runs fine.
Oh yeah, for some reason I thought you had the rear shaft removed
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Unread 05-23-2012, 07:44 PM   #8
ZeJokee
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Haha. Simple mistake.
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99 WJ Ltd, Blacked out, 4.7L, 242j Swap, 2'' BB, 245/75/16 Kuhmo Venture AT KL78, Flow Master Super 40, MagnaFlow high flow Cat, Akebono caliper upgrade, Addco rear swaybar, Westin brush guard, Moog Super Trail Boss, Rancho RS5000, Rola roof rack with dual kayak J hooks, PAC-AOEM-CHR, Sony Xplod 1200w amp, 2 Sony Xplod 12'' subs, 118,XXX miles (SOLD)
93 ZJ Ltd, Blacked out, 5.2L, Reman 46RH, Reman 242 Swap, 3.5'' IRO + 2" BB, 33x12.50r15 Mud Claw MTX radials, Bushwacker Flares, 216,XXX miles (Still parked in NC)
04 F-350 SD Crew Cab FX4 Lariat, 6.0 PSD SRW, Head studs, AFE Stage 2 SI Pro Guard 7 intake, Blue Spring mod, 150,XXX Miles

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Unread 05-23-2012, 07:44 PM   #9
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Quote:
Originally Posted by ezflip View Post
If you want to drive it without the front shaft, put it in 4pt.
this would be accurate if he wanted to drive without the rear shaft.
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Unread 05-23-2012, 10:31 PM   #10
Sohcvtec1995
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Well to actually try to answer your question, did you adjust the cable correctly?
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Unread 05-24-2012, 04:19 AM   #11
ratmonkey
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Quote:
Originally Posted by Sohcvtec1995 View Post
Well to actually try to answer your question, did you adjust the cable correctly?
Huh?
His question was answered, the case is working correctly given the conditions it was subject to.
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Unread 05-24-2012, 06:14 AM   #12
ZeJokee
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The shift cable on the t-case? Yes, cable is set to the bottom hole on the mount and is adjust. It shifts fine into all selections and every selection works. I was wrong in my understanding of how the 242 awd works compared to the 247 but that has been cleared up.
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99 WJ Ltd, Blacked out, 4.7L, 242j Swap, 2'' BB, 245/75/16 Kuhmo Venture AT KL78, Flow Master Super 40, MagnaFlow high flow Cat, Akebono caliper upgrade, Addco rear swaybar, Westin brush guard, Moog Super Trail Boss, Rancho RS5000, Rola roof rack with dual kayak J hooks, PAC-AOEM-CHR, Sony Xplod 1200w amp, 2 Sony Xplod 12'' subs, 118,XXX miles (SOLD)
93 ZJ Ltd, Blacked out, 5.2L, Reman 46RH, Reman 242 Swap, 3.5'' IRO + 2" BB, 33x12.50r15 Mud Claw MTX radials, Bushwacker Flares, 216,XXX miles (Still parked in NC)
04 F-350 SD Crew Cab FX4 Lariat, 6.0 PSD SRW, Head studs, AFE Stage 2 SI Pro Guard 7 intake, Blue Spring mod, 150,XXX Miles

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