adamzan Posted November 2, 2013 Share Posted November 2, 2013 (edited) So I just replaced in the last while both front cv joints. I notice now I get a vibration on acceleration in 4wd. If I put it back to 2wd and leave the hubs locked it vibrates slightly (feels like driving on rumble strips) between 35-55 mph (it seemed to smooth out after that but I didn't go past 60). Someone told me it is the suspension lift but it was fine before, and it is barely cranked up, probably an inch over stock. I hadn't used the 4wd in a while and thought may be the front u-joints needed some service. They were stiff in one direction so I replaced them and I didn't really notice any difference. Another thing I noticed is that the 4wd will not disengage unless I stop and throw it in reverse, and move about a foot. Then the light will go off and it will be in 2hi. I used to be able to in and out of 4hi with no issues....I checked the t-case fluid it is full and clean, changed last year. Thanks in advance. Really irritating to drive it this way and I don't want to mess something up. Btw all is well in 2hi with the hubs unlocked. No unusual noises either. Edited November 2, 2013 by adamzan Link to comment Share on other sites More sharing options...
5523Pathfinder Posted November 2, 2013 Share Posted November 2, 2013 Sounds like a hub is not disengaging. Yeah, in some cases, you need to roll backward to disengage everything. Does it shake after backing up? When is the last time the hubs were cleaned and lubed? Link to comment Share on other sites More sharing options...
adamzan Posted November 2, 2013 Author Share Posted November 2, 2013 I have manual hubs, so I don't have to back up to disengage the wheels. The hubs were lubed a couple months ago and are easy to lock in. I'll try and word it better, say I throw it in 4hi, the dash light comes on, you can feel that it is engaged. Then while driving I try and throw it back in 2hi, the green light stays on and I can feel that it is still driving the front wheels (testing on a gravel road). If I stop, put it in reverse and give it a quick shot of throttle, it will disconnect... Sometimes I can get it to turn off by going to N and back to drive. Have you guys had any problems with aftermarket CV shafts causing a vibe? The old ones were original and it rode smooth as glass. Hopefully that is more clear! Link to comment Share on other sites More sharing options...
nunya Posted November 2, 2013 Share Posted November 2, 2013 everything in your front suspension snug and lubed? (TREs, Wheel Bearings, BJs, etc...). Alignment good? (i've seen/experienced some out of schwack alignments make front ends shaky and all kinds of wHeird pulling when locked in) I know you said universals were replaced, you sure they are still good? New don't always mean good and new stuff fails just like old. Link to comment Share on other sites More sharing options...
adamzan Posted November 2, 2013 Author Share Posted November 2, 2013 Yep, I have new upper ball joints, new idler arm bushings, fresh lube and tight bearings. Alignment is not perfect but it doesn't pull. I did the universals myself the other day, they seem good, no play or binding of any kind. Front end is nice and tight. The only thing I notice is the vibe. Its a very sharp vibration, not like the shake of a wheel out of balance, feels like driving on those rumble strips on the side of the highway. I can feel it in the steering wheel only. Can I drive with one hub unlocked to rule out cv shafts one at a time? Link to comment Share on other sites More sharing options...
nunya Posted November 2, 2013 Share Posted November 2, 2013 Quick thought the rumble strip comment gave me, how are your front shocks/bushings? I just went through hunting a vibration on the Blazer that ended up being a shock bushing... Link to comment Share on other sites More sharing options...
adamzan Posted November 2, 2013 Author Share Posted November 2, 2013 Just put new shocks in a couple weeks ago, did tension rods last year as well. I only seem to have the problem when the front parts of the 4x4 are turning. Link to comment Share on other sites More sharing options...
Rebelord Posted November 2, 2013 Share Posted November 2, 2013 Wheels/lugnuts tight? If so, could try swapping fronts to back to see if it goes away from a tire issue. *On the note of CVs. Wasnt there a recent thread of someone having issues with aftermarket CVs compared to OEM? Link to comment Share on other sites More sharing options...
Precise1 Posted November 2, 2013 Share Posted November 2, 2013 The universal joints on the front drive shaft. Do they rotate freely and without binding? I had a shake on the old pathy and when I jacked it up, the drive shaft was wagging the tranny/rear end. It was all due to the universal joints. B Link to comment Share on other sites More sharing options...
adamzan Posted November 3, 2013 Author Share Posted November 3, 2013 Wheels/lugnuts tight? If so, could try swapping fronts to back to see if it goes away from a tire issue. *On the note of CVs. Wasnt there a recent thread of someone having issues with aftermarket CVs compared to OEM? I rotated the tires this morning before my friend came over, same thing happens Read some threads about the cvs. Guess I'll try running it with one hub locked at a time to try to isolate it. The universal joints on the front drive shaft. Do they rotate freely and without binding? I had a shake on the old pathy and when I jacked it up, the drive shaft was wagging the tranny/rear end. It was all due to the universal joints. B Just changed the joints a couple days ago, they are nice and smooth, no binding or play. Link to comment Share on other sites More sharing options...
ahardb0dy Posted November 3, 2013 Share Posted November 3, 2013 you may still need to backup slightly even with the manual hubs, it's possible when the hubs lock and than you unlock them something inside is still binding preventing the hub from actually unlocking, when you back up it breaks the binding and unlocks. Link to comment Share on other sites More sharing options...
Alkorahil Posted November 5, 2013 Share Posted November 5, 2013 Inner and outer front wheel bearings good? drive shaft bearing good? Is the thust washer on the drive bearing seated well? Link to comment Share on other sites More sharing options...
adamzan Posted November 6, 2013 Author Share Posted November 6, 2013 Inner and outer front wheel bearings good? drive shaft bearing good? Is the thust washer on the drive bearing seated well? What do you mean by drive shaft bearing? Link to comment Share on other sites More sharing options...
mluczaj22 Posted November 6, 2013 Share Posted November 6, 2013 had a similar issue. was pinion shaft bearing was smoked! Link to comment Share on other sites More sharing options...
Alkorahil Posted November 6, 2013 Share Posted November 6, 2013 What do you mean by drive shaft bearing? 40588 is the drive shaft bearing. 40589 is the thrust washer 40210 is the inner hub bearing 40215 is the outer hub bearing Link to comment Share on other sites More sharing options...
adamzan Posted November 12, 2013 Author Share Posted November 12, 2013 Ok I checked those bearings and they are smooth and have no play. I think I found the problem. When I took off the passenger side hub, then took it for a drive, it did not vibrate in 4wd. So either that CV is binding/crappy or something is loose. I think it is the CV thought. It is a new cardone one from rockauto. The other side is a reman I bought locally... Time to see if rock auto will send me another. Link to comment Share on other sites More sharing options...
fast5speed Posted November 12, 2013 Share Posted November 12, 2013 Ok I checked those bearings and they are smooth and have no play. I think I found the problem. When I took off the passenger side hub, then took it for a drive, it did not vibrate in 4wd. So either that CV is binding/crappy or something is loose. I think it is the CV thought. It is a new cardone one from rockauto. The other side is a reman I bought locally... Time to see if rock auto will send me another. I have had bad experience with those Cardone axles. I was replacing an axle, and the 5-bolt spread on the front diff. side didn't line up. And the joints in the axle had...not "A lot", but they had too much play for a brand new part, especially it not being a reman part. it took me 2 hours to figure this out because the bolt spread was so close, but still didn't fit. I had to go up to Advance Auto and buy some junk reman axle, but it felt much better than the cardone one and fit perfectly. Rockauto was great about giving me my money back Link to comment Share on other sites More sharing options...
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