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  1. Engines & Drivetrain
    My wife's 2013 Jeep, Grand Cherokee - Limited, 3.6L is about to leave her stranded on the highway. Extremely loud hum from the backend, getting worse every day. Took it in to Jeep, and they said it needs a new rear differential. ($3500 repair). Metal flakes in the oil. Being handy, I thought...
  2. WK2 Grand Cherokee Forum
    Looking for some feedback from you experts out there…. Just put on new tires and vibration still there at highway speeds. Accelerating, it goes away. Putting it in neutro, still there. Possible causes: — It feels like an unbalanced driveshaft, but… if vibration stops when accelerating, then it...
  3. WJ Grand Cherokee Forum
    I've noticed a clunking noise that sounds like it is somewhere in the front end. I am suspecting it is the differential because it gets worse with 4wd engaged. It is not grinding or whirring so I don't think its a bearing. It is tied to wheel speed and not engine rpm and is approximately the...
  4. KJ Liberty Forum
    I'm hoping you guys can help me figure out my part mystery. I've got a 2006 3.7 with the 3.73 front diff. I went off roading with some friends and cracked the passenger side axle housing that mounts in the diff. That axle housing has a flange on the end and theres a bracket that runs...
  5. WK Grand Cherokee & XK Commander Forum
    Hi, I have a problem with a hard noise*(like knocking) when coasting with my 2008 CRD Jeep GC (Quadra Drive II). I suspect it to be the front differential (as it is where the noise comes). It doesn't make that noise always. It just happens randomly when coasting. I changed the front...
  6. Jeep CJ Forum
    The surface I drive on with the least traction is icy roads. I'm making safety more of a priority these days.. I want to choose my differentials based on the least traction situation (ice and/or black ice). I'll start by saying the appropriate TIRES are probably the most important factor. I get...
  7. XJ Cherokee Technical Forum
    Hi folks, appreciate assistance as always. I'm rebuilding my 8.25 diff, had a whir that I diagnosed to a bad outer pinion bearing and race - both were pretty pitted. I've replaced all bearings, have new seal, new pinion nut/washer. I also installed a Spartan locker and a crush sleeve...
  8. YJ Wrangler Technical Forum
    Hello Ladies & Gents, I've had myself a problem recently. (I'm learning, so please don't berate me for my mistake. I know I messed up.) When replacing a yoke & pinion seal on my rear axle, I screwed up/ordered the wrong seal, resulting in the oil leaking out of my diff while driving. What...
  9. WK Grand Cherokee & XK Commander Forum
    Short version: If your rear pinion seal is leaking, change the diff fluid when you replace the seal Looking for opinions on if I actually need to change the rear end and if so, what do people suggest? Long version: The ring and pinion has always been loud since I got the Jeep with around 87k...
  10. ZJ Grand Cherokee Forum
    '97 ZJ Laredo 2WD w/206000 miles. Driver's rear is making a distinct bearing noise and I have a whine from the differential. I might as well do a rebuild while I'm opening the differential for the axle bearing and know I won't have to open it again soon. I'm just getting confused on what...
  11. XJ Cherokee Technical Forum
    I pulled this axle assembly from a '98 XJ in the salvage yard. Dana 30 HP, just pulled the cover, the stock fill plug is obviously magnetic with a bunch of residue, the odd area is where I touched it. Also, ^ and < markings on the bearing caps and housing makes me think these gears, or the...
  12. Engines & Drivetrain
    2002 WJ w/QuadraDrive 30 I'm getting some small bidding mostly when I'm tight turning (like pulling out of the driveway) it does it more when turning left. But now over the past week or so, it feels like doesn't roll freely like it should when I first take off. Like something is holding the...
  13. Engines & Drivetrain
    hey guys. first post here and fairly new to the jeep game as well, so bare with me here. I have a 96 grand cherokee ZJ with dana 35 3.55 disc brakes. It was given to me by my father and was told the axle shaft bearing and seals needed to be replaced. Shortly after, (a week, maybe two) i'm...
  14. TJ Wrangler Technical Forum
    Recently my dads 1997 Jeep Wrangler TJ Sport 4.0L Rear Differential Spider Gears Broke. its a 5 Speed Manual non abs and we have been looking for the spider gears for a long time but cant find the right ones if anyone has a link to a site where we can find the Spider Gears please help! i am 17...
  15. Engines & Drivetrain
    I have a 1995 wrangler yj that I haven't had on the road yet. I'm trying to figure out what type of locker it has in the front. It is definitely not stock. It locks when it is in 4wd or when there is any power being imputed to it. But when it is up in the air on jacks both tires can freely...
  16. ZJ Grand Cherokee Forum
    Hi all, I've had problems with my front differential and I'm now thinking about converting my jeep to rear wheel drive. I've had problems with the all time 4 wheel drive system, and removing the front driveshaft this weekend has seemed to help. But now I just want to get rid of my troublesome...
  17. Jeep CJ Forum
    After digging into the diffs on the 85, I discovered that they have 3.31:1 gears, which are way to low for the 32" tires I'm going to be running. Based on the gear ration calculators, I've been able to find on the web and the kind of driving we'll be doing with it, I think 4:10:1 gears will be...
  18. WK Grand Cherokee & XK Commander Forum
    I'm about to change the diff oil in a 06 WK with the 8.25 rear axle, I don't know how much it has been since the last change so I was thinking if it needs to be cleaned when I change the fluid. I have read on some forums people saying to use brake cleaner, but other people say no, don't use any...
  19. ZJ Grand Cherokee Forum
    I've been battling a humming noise from the front end of my 98 5.2 ZJ for quite some time. I had an axle seal blow and the shop told me the humming noise I heard was probably due to low fluid in the differential. After a costly repair bill, I decided to do it myself. I finally got around to it...
  20. TJ Wrangler Technical Forum
    So I have searched the internet for this issue but no one seems to be quite like this... I have a '03 TJ, d44 rear, 33 in tires, auto trans, 3 in lift.. When I am turning right and hit bumps or turn right while going up a hill, I hear clunking or creaking. It does not happen when I am going...
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