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Old 04-05-2010, 08:46 PM   #1
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Totally confused and pissed!!

So, I have posted in other threads about similar issues, here we go, after having a whole new rear drivetrain installed and my front DS rebuilt and balanced, I still have a vibe and roaring noise at 65 to 70 Mph, the last driveline shop spent three days going through the entire system and tell me if I want all the vibes gone they have to re-drop the transfer case WTF? So then I hear that instead of dropping the TC I can do a MML. I am running the Rockkrawler 4" lift with 33's, Brand new D44, SYE and custom DS. Is anyone else having or had the same issue? The rear pinion seams to be dead on balls accurate, why did I ever spend the cash for an SYE when the vibes were less with all the old crap in?

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Old 04-05-2010, 08:55 PM   #2
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to your vibes- I think we went over it. It was a pulsating vibe correct? The only thing it really could be is a drive shaft out of balance, tires. What you can do is toss the t-case drop in it and see if the vibes are better or worse. If they are better you need to raise your pinion angle more. If they are worse drop your pinion angle. You do not need a t-case drop with a SYE BTW.


The other thing that just came to mind. IS your pinion nut tight? Is your sye output nut tight also. IF they/one or the other are not tight they will play havoc with you and the jeep. IF you can not get this figured out by June, I will be in vegas and have no problem taking a few hours and coming over to help.

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Isn't the JK just a rebodied PT Cruiser?!

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Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-05-2010, 09:09 PM   #3
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Can you post the link to the previous thread? I don't remember it and I don't want to re-hash stuff that might have already been done (like tires/wheels/balance etc).
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Old 04-05-2010, 09:27 PM   #4
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stevens, i think he had it up on jeepforum??? i think i saw it there?? i'll try to find it for ya, i'm wayyyy out here in the woods and my tethering isn't the quickest..... not when you're 10 minutes from the easternmost point in america.
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Old 04-05-2010, 09:28 PM   #5
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stevens, i think he had it up on jeepforum??? i think i saw it there?? i'll try to find it for ya, i'm wayyyy out here in the woods and my tethering isn't the quickest..... not when you're 10 minutes from the easternmost point in america. took me five minutes just to get this page up. lol.
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Old 04-05-2010, 09:32 PM   #6
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Larry it was here on WF I am going to go and try and find it.
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Isn't the JK just a rebodied PT Cruiser?!

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Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-05-2010, 09:36 PM   #7
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Ok.

I guess in the meantime...

Warning, my father pounded into my head at an early age to ALWAYS start troubleshooting at the: free/fast/easy level and go from there...so...

Did you have the tires balanced? Sometimes, those are the issue.

How is the steering? Is it stock? Do you have a drop pitman arm? Is everything tight and aligned?

Pull the rear DS and put it in 4HI and try a run to 60-65. Problem all gone or still there?

Is it the same shop that did the lift and all the work you mention above? Is it time for a change of scenery? If the 4" causes vibes and the guy didn't bother to tell you that it might, he's; at a minimum; a money grubbing jerk or worse: an idiot.

Idiot's can't fix stuff (sorry for the techno-speak).

Money grubbing jerks can but it'll cost you.

Check the simple/free stuff first and go from there. If you need the shop guys to do it, consider changing.
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Old 04-05-2010, 09:55 PM   #8
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I put the lift in a year and a half ago running el cheapo 31" tires, had 33"s installed a year ago. Stock D35 and D30, stock DS was at a wicked angle and I didn't have this annoying low pitch growl, had 4wheel parts install a brand new D44 and SYE with Custom DS in the rear, regeared to 4.88's. picked it up from them, with one hell of a vibe and growl, took it back 3 more times, they got the rear 80 percent vibe free. In the mean time I took my front DS out to a different driveline shop who balanced and rebuilt it, once I put the front back in and drove it, it was like driving a tank. Took it to said driveline shop to go through the whole Jeep, I had the tires balanced again, they tinkered with the front and rear, they said I was missing a weight from the front, the one they just balanced, 3 days later, on top of the 6 days at 4wheel parts, I get my rig back. It is night and day, but I still have that harmonic growl, shake at freeway speeds. I have a drop pitman arm and the drop down trac-bar bracket. If I pull the front DS out it is almost non-existent, when I pull the rear, ditto, the two combined...... GROOOOOWWWWLLLLLLLLLLLLL, WHUUUUUUMMMM, WHUUUUUUM
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Old 04-05-2010, 10:20 PM   #9
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Ok so if one of the drive shafts is out there is no vibe also?
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-05-2010, 10:24 PM   #10
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very little jd
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Old 04-05-2010, 10:32 PM   #11
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So you pull the rear drive shaft it still has the vibes- then it is not the pinion angle in the rear- The pinion angle in the front doesn't truly matter since it is a longer drive shaft and it can handle the difference in the angle. So we are going thru with your t-case/trans.

Wait wait wait- Have you checked your trans/tcase mount? Along with your motor mounts?
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Quote:
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-05-2010, 10:38 PM   #12
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I have not checked those jd, the noise/vibe is hard to explain, it is a low growl/vibe. The kind of noise that comes in waves and gives you a headache and makes you sick to your stomach after about 20 mins at highway speeds, and it rattles my sphincter
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Old 04-05-2010, 10:47 PM   #13
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To the noise it is a rotational. I am going to go with cv joint is at fault there. You showed us the pinion angle and it looked good. I am going back to the pinion yoke- t-case output yoke, or cv joint bad. Even check the fluid in the t-case too. See if it is low.

My front drive shaft vibes at 80 mph like that in waves IT got real annoying then I just unlocked the front end with my manual locking hubs lol.
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-05-2010, 10:52 PM   #14
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I haven't read through all that you have changed or checked but front wheel hubs will cause vibration and noise when they start going bad and its very difficult to pin point where the sound and vibration is coming from. Mine was worse at about 40 mph.
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Old 04-05-2010, 10:55 PM   #15
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So I could have a wheel hub or both going? It's a 2004 with a little over 50k
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Old 04-05-2010, 11:00 PM   #16
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Possibly- try this- jack up just the front end by the axle. get the tires up off the ground about 6in. Grab one tire by the top and bottom with your hands and see if you can rock the tire. IF it moves then your wheel bearings need replacing.
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-05-2010, 11:04 PM   #17
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So I could have a wheel hub or both going? It's a 2004 with a little over 50k

Offset wheels and larger tires can put added stress on the hubs.
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Old 04-05-2010, 11:13 PM   #18
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^ yea and no to this. It will over a certain period but with you only having 50k say 40k on the lift and stuff it is very unlikely that those caused your issue.
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-05-2010, 11:21 PM   #19
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I will try that jd, isn't that the trick to see if you balljoints are shot?
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Old 04-05-2010, 11:24 PM   #20
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It will reflect more what is going with the hub. Ball joints normally make a popping sound when they go bad.
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-05-2010, 11:29 PM   #21
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I will try that tomorrow, as well as removing each driveshaft individually (again), to see which of the two companies I can jam it up their ass,since they jacked up my Rig. Thanks for all the help
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Old 04-05-2010, 11:32 PM   #22
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Can we get video of you violating somebody with a drive shaft that would be awesome lol
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-05-2010, 11:45 PM   #23
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What kind of tires and at what pressure?
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Old 04-05-2010, 11:52 PM   #24
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^ great point- I run my 33's right at 25 in the front and 27 rear.
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Quote:
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Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 04-06-2010, 09:18 AM   #25
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hmmm, jd has what i was thinking. possibly bad joints in the front ds up at the dc joint next to the tc. i had this little annoying almost grinding sound a while back, it just started randomly, sounded like mean grinding. it'd come and go inconsistently. but more noticeable if i was ever in 4wd, so i thought it was my front ds. you said the noise is gone with the front ds out? we'll i think that makes it a good culprit. anyways back to the point, i went underneath her, grabbed the ds up towards the dc joint, had a little clunking play in it. i had a friend grab it, he didn't think it was too bad. anyways a couple weeks later, driving to my parents house to drop off the jeep, and im on the highway, and boom its back and louder! get underneath her and she was really loose. so the two joints and flange are gettin replaced ASAP, my little sister's bf is helping my father out with it since i'm 200+ miles away. i'd say you might just have a bad joint or two... um have you greased them up? see if the noises stops for a while? then if it comes back after some decent driving, i think you've got your perpetrator. also, where does the noise sound like its coming from?? with mine, i feel like i'm sitting right on top of where the noise is, right around the center consol and shifter. (sound will travel through that hole in the tub too, but its was still pretty distinctive)
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Old 04-06-2010, 12:14 PM   #26
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It rattles my sphincter, and feels like it is in the rear, I am running the new MT/R's 33's air pressure at 28 psi(nitrogen). It is 100 percent a driveline issue, when on the freeway at 65 to 70, when I lift off the skinny pedal it goes away. This issue was not here before I had all of this work done, so.....rearend, driveshafts, SYE, gears, axle bearings/seals.......
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Old 04-06-2010, 03:51 PM   #27
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possibly needs realigned
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Old 04-07-2010, 12:14 PM   #28
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Update: So i removed my front DS last night and drove it, the vibe has changed, now at street speeds 25 through 40 vibing, once Jeep kicks into overdrive whumwhumwhumwhumwhumwhum, highway speeds growl and vibe gone, So it appears I still have an issue with the pinion angle in the rear, the front I guess could be either the yoke on the TC , the yoke on the front Diff, or both? Either that or the shop that balanced my front DS (twice) is all jacked up?????????????????????????
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Old 04-08-2010, 12:15 PM   #29
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UPDATE: So back to the driveline shop i go, he put my DS on the balancer and the whole thing is egg shaped, how they missed that I don't know, so I am getting a custom front DS compliments of them..... The rear vibe they have to adjust more on the control arms to find the sweet spot(again). Keep in mind this is no cost to me just a PITA, going back and forth. So........ I am driving home from the driveline shop and I think I smell gear oil, I shrug it off thinking it's the car in front of me. Pull into my driveway and gear oil is puking out the rear vent tube....WTF? Back to 4wheeldorks this morning, I guess they forgot to cut a baffle allowing fluid to fill the axle tubes, so instead the housing pressurized and blew most of my fluid all over the place......

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