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Discussion Starter #1
Hey folks,

I've lurked the site for the almost 4 years I've had a Commander, and now I need some help. I've utilized the search and pored over all other threads that could be related, and so far I'm coming up with nothing. Please know I did try my best at self service before starting a new thread :)

Jeep:
'06 Limited with 5.7 Hemi
111000 miles
bone stock

About 2 weeks ago, the Jeep started to develop this weird shudder move on low speed turns in forward or reverse. It happens most when I pull out of my driveway in the morning, and by the time I get to work, its gone. If the truck cools down, it happens again. I feel it in the pedals and steering wheel most prevalently, and it almost feels like the front wheels are skipping (like having it in 4WD Low on concrete). There is no audible grinding, and I've had my wife drive it for me so I could listen/watch in the driveway, and she had to actually honk the horn when she felt it, as you cannot hear it outside the vehicle.

What I've eliminated:
  • Sway bar bushings (still there with bushings removed, but ordered new ones anyway)
  • Truck jacked up by control arm - no play in wheels side to side or pushing the wheel in/out of the wheel well.
  • Boots on CV joints show no tearing or leakage
  • Fresh oil in front/rear differentials
  • Tie rods were tight and were not moving excessively
  • Shifting gears does not produce a noise, and "jerking" the wheel doesn't produce any noise either.
I have yet to change the oil in the transfer case (holiday weekend and all), but am getting oil tomorrow from the dealership. Trans was done 15K miles ago. I've also not checked the nut on the steering rack.

I am simply baffled, as it goes away after a few miles once it warms up.

Could it be alignment? It holds a line fine. The only thing that spooks me is if it is a bad CV joint, I don't want a catastrophic failure, otherwise I'd ignore it.

So, is there ANYTHING else I am missing? I really want to get it back "straight" as I got the go ahead from my wife to lift it and throw an exhaust on it, so I'm pretty motivated at this point :)

Thank you guys in advance, you all have helped me more than I can say in the past!

-RyanD
 

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Does it occur only while accelerating/decelerating at low speed while turning, or does it happen regardless at low speed when it's cold? And how low of a speed are we talking here? Have you had a chance to actually try a higher speed turn to see if it does it then as well?
 

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Discussion Starter #3
The fastest cold turn I make is 10-15 mph, and yes, it does occur at those speeds.

When I say low speed, I mean trans in D, no brake applied, cut the wheel. Straighten it out, shudder gone. In the morning, I pull out in reverse, 5-8mph (I guess), cut the wheel and enter the street. it occurs there too. When I pull into major traffic, it shudders until I straighten out the truck, then its all good. 10 minutes later as I'm navigating tight turns in the parking garage, no shudder whatsoever.
 

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Perhaps it's power steering related? Next thing I would try is cold turning and holding the wheel in one spot and seeing if it continues to shudder the whole time even though the steering wheel isn't moving. Also try every amount of turning (straight to full lock) to see if the shudder goes away at any point.
 

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Discussion Starter #5
Nitemare, thanks for the advice, and I have a bit of an answer for you:

Typically, the wheel is fully turned when it happens. So yes, I get the shudder when I hold the wheel in position to make a turn/back out of my driveway. Steering fluid was low last plug change, but topped off and no shudder change then.

Quick other update: swapped transfer case fluid, its slightly less pronounced, but still there. What I did finally hear tonight is a screech from the brakes on turns to the right, so something is grinding. I cannot remember the last time I did pads, and at 110K miles, she's probably due for rotors as well. Gonna do pads/rotors this weekend and report back.

Thanks all, appreciate the help. I can't wait to get the Jeep back to square one and install new suspension and exhaust :)
 

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id remove the caliper and lube the slides pins
 

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RyanD - please let me know how the rotor and pad replacement works for you. I have the exact same issue as you do. By the way - what brand of rotors are you going to put on your Jeep?

07 Commander Limited with Hemi
 

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Subarus will give those kind of symptoms with their transaxles especially for the automatics. Frequent fluid changes help solve/prevent this.

Try fresh fluids in your TC and diffs, and don't forget the OEM friction modifier in the diffs since you probably have QDII. TC fluid should also be OEM.
 

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Discussion Starter #9
Quick update:

Yesterday did pads and rotors (they were SHOT), and I still have the shudder. FWIW, I went with cheapies that Oreilly had in stock as far as rotors went. Went slow, cleaned everything obsessively, lube slide pins in the front, and the brakes are now super smooth and SILENT!

So, now I'm really down to axles. Oreilly carries them in stock for $70 a piece, each side. I'm thinking that will be next weekend's project.

Thanks!
RyanD
 

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Keep us updated I have an identical problem... seems its real common for the XKs and no one has a set solution not even the dealership
 

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Does it only do it when fully turned (Locked)? There is a service bulletin about "Lock shudder" and the fix was to use a new (to 06) transfer case lubricant. Mine was doing it and the oil change fixed it.
 

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Mine happens while turning to full lock, it happens maybe 2/3 / 3/4 to full lock. Then clears up once I straighten it out. Do you have a link to the TSB? or a number for it?
 

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I do not have the TSB number but it basically said to use the following oil as the original 06 used something else. Cost for oil is about $17 from the dealer. The TSB did not pay for it - you must pay.
Transfer Case (4.7L/5.7L Engines)
Mopar® NV 247/245 Transfer Case Lubricant
 

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Discussion Starter #14
I do not have the TSB number but it basically said to use the following oil as the original 06 used something else. Cost for oil is about $17 from the dealer. The TSB did not pay for it - you must pay.
Transfer Case (4.7L/5.7L Engines)
Mopar® NV 247/245 Transfer Case Lubricant

I forgot to mention that late last week I did change my TC oil with the one listed above, paid $36 with tax for 2 quarts. No change.

It only seems to get more intense the tighter I turn the wheel and the slower I go. So, if I'm just in the driveway doing it at idle speed, it can nearly stop the jeep. Sounds very much like tires are "jumping". Kind of a groan, shudder, skip thing. I was considering mounting my phone somewhere to the underside and filming it to see if I could figure anything out.

But the damndest thing is that once I drive a few miles, it goes away, steering and sharp, slow turns are smooth as silk. If I knew it wasn't something potentially catastrophic, I'd ignore it and just start the fun stuff. But, being COMPLETELY OCD, I feel like i need to swap axles just to cross it off the list.

Saturday night I pulled it onto rhino ramps to really get a better look. Everything was tight, there was not flung grease, it was just absolutely baffling.

Given that Oreilly axles are $70/each and they seem straightforward enough to DIY, I'm going for it. Going to do new sway bar end links while I'm there too.

I read in another post that a shock may be loose. Is there an easy way to get to it from the top? So much stuff jammed into the bay of the Hemi, seems almost impossible to do without ripping it all out.

Again, thanks everyone for your input. I love this Jeep and am really stoked to finally have the go ahead to make it into a project vehicle. With two kids in private school, I just don't have $12K laying around to buy a Wrangler or FJ :)
 

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Literally in the same boat Ryan. As soon as the car warms up a bit it goes away. A close relative who's a certified mechanic thinks it might have something to do with the clutches in the diff grabbing prematurely - basically the LSD kicking in before it should - and once the fluid gets warmed up it lubes them up better preventing the shudder. (IIRC from what he said last time we spoke).
 

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Discussion Starter #16
Literally in the same boat Ryan. As soon as the car warms up a bit it goes away. A close relative who's a certified mechanic thinks it might have something to do with the clutches in the diff grabbing prematurely - basically the LSD kicking in before it should - and once the fluid gets warmed up it lubes them up better preventing the shudder. (IIRC from what he said last time we spoke).
Yes!! This is exactly what it feels like. Same feeling as if I were letting a clutch out too fast. Gonna swap front end fluid while I have it all apart again (about 200 miles on it since last change).

I'll ask the newb question - are the clutches adjustable? :)
 

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I just bought an 06 himi loaded. 2 1/2in lift. 60k miles but it was hit in the pass side front. Mine does all the same but only when i turn left. Im suspecting a wheel baring? I will be watching and if i get to it first, I'll post my findings. Write now i have MT mud thunderers so thats my first step =to sell them. 265/70/17's like new.I want AT"S.. Gonna put them on the classifieds as soon as i can get it to pull up,it's not working as of now.Maybe my computer skills.
 

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For all who have QDII, you must use the OEM friction modifier in your differentials to keep the clutches happy. Do not assume that any expensive fancy-dancy gear oil that claims to have friction modifier will do the job. GET OEM!!!
 

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Discussion Starter #19
Thanks, I'm going to grab some from the dealer today. I didn't use the FM in the front because Mobil 1 claims to have it and anything at the parts store specifically said not for QD II jeeps. So, I forewent FM. Never again!
 

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Discussion Starter #20
Guys, one more quick update. Last night I drove it around town after it had sat warm for an hour. It's doing it at all speeds and all turns. I made a turnaround a little faster than usual and it seems like it may be rotational. Definitely some vibration/rubbing type sounds, but faster, given my speed on the turnaround.

Axles, bushings and sway bar end links are supposed to be here today, and I am going to install them this weekend. Running to the dealer today for FM and am gonna pick up new gear oil for the front as well. Thanks everyone!
 
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