Differential problem I think?? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > Differential problem I think??

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineThe Solution to Radius Arm Bind - Meet Lock-N-LoadFS: Jeep Fog Light LED Bulbs! Several Brightness Options!

Reply
Unread 12-25-2011, 04:58 PM   #1
hdrocknroll
Registered User
1995 ZJ 
 
Join Date: Dec 2011
Location: Flint, MI
Posts: 2,271
Differential problem I think??

I have a whining in the rear.
I just bought this Jeep December 3, 95 grand Cherokee 4.0, I have been doing a lot of repairs.

It had a bent rear left axle, replaced axle with good junkyard axle new bearing and seal.
Before that I don't know if the rear end was whining because the left rear bearing was making so much noise.

Now I thought it might be making too much noise, whining at lower speeds, but today was first day I took it out on freeway, and when I got it up to 70 75 80 it was whining big-time, wines most as you accelerate, a lot less when you let off.
Is definitely coming from the rear not the tranny.

When I did the rear axle I checked the fluid before I opened it up and it was only slightly low, the fluid was black.
I noticed that it had been leaking some around the pinion seal. The new oil I put in was Mobil1 Synthetic Gear Lubricant LS 75W-90
.
It has the command Trac four-wheel drive, the rear end is a Dana 35C, does this require an additive?, I did not put any additive in.

So! Is my right rear bearing bad making that noise? I doubt but I thought I should ask. Or is it my pinion gear? Or other parts in the rear end? Or drive shaft u joint maybe?

From what I understand it is probably not a good idea for me to try to replace the pinion gear, so how much will it cost me to have this done?

How many miles can I drive it this way without destroying something?


__________________
Always !! Keep A Firm Grip On Your Tool !!

Watch Out For The Air Hose Gone Wild!! Or Wear A Cup,: True Story


[QUOTE=rooster51;13297693] Whats the worse that can happen? Your jeeps already broke.



[/QUOTE]
hdrocknroll is offline   Reply With Quote Quick reply to this message
Unread 12-26-2011, 03:04 PM   #2
hdrocknroll
Registered User
1995 ZJ 
 
Join Date: Dec 2011
Location: Flint, MI
Posts: 2,271
I appreciate your opinions !!!!
__________________
Always !! Keep A Firm Grip On Your Tool !!

Watch Out For The Air Hose Gone Wild!! Or Wear A Cup,: True Story


[QUOTE=rooster51;13297693] Whats the worse that can happen? Your jeeps already broke.



[/QUOTE]
hdrocknroll is offline   Reply With Quote Quick reply to this message
Unread 12-26-2011, 08:39 PM   #3
Nejeep
Registered User
 
Join Date: Jun 2006
Location: Lincoln, NE
Posts: 433
Probably your pinion bearings if the noise changes between acceleration and decceloration. Its usually easier and less costly to replace the whole rear end than setting up new bearing loads and clearances. To bad you already spent time and money on the axle. May want to get estimates from some shops unless you want to dive into it.
__________________
06 Laredo - 4x4 V6 - Stone White - Custom LED Cargo Area Lights, Lighted Visors Added - now at 49k miles

97 Laredo - 4.0 4x4 Daily driver for 8 years then relocated to Arizona for 6 more years with the relatives
Nejeep is offline   Reply With Quote Quick reply to this message
Unread 12-26-2011, 08:59 PM   #4
hdrocknroll
Registered User
1995 ZJ 
 
Join Date: Dec 2011
Location: Flint, MI
Posts: 2,271
When you say to replace the whole rear end ,do you mean differential guts,housing,axles, the whole kit and caboodle ? Like from junk yard?
I found a couple on car part.com , from a 1998, close to my house,they are $350 and $400 ,does that sound right
How do I know what ratio mine is , it is a 35c ,but there is no tag.on it
__________________
Always !! Keep A Firm Grip On Your Tool !!

Watch Out For The Air Hose Gone Wild!! Or Wear A Cup,: True Story


[QUOTE=rooster51;13297693] Whats the worse that can happen? Your jeeps already broke.



[/QUOTE]
hdrocknroll is offline   Reply With Quote Quick reply to this message
Unread 12-27-2011, 07:57 AM   #5
Nejeep
Registered User
 
Join Date: Jun 2006
Location: Lincoln, NE
Posts: 433
Yes, the complete rear axle housing with internals can be swapped. The best way to determine the ratio is pulling the cover off and counting the teeth on the ring gear and pinion or reading the numbers stamped on the ring gear.
__________________
06 Laredo - 4x4 V6 - Stone White - Custom LED Cargo Area Lights, Lighted Visors Added - now at 49k miles

97 Laredo - 4.0 4x4 Daily driver for 8 years then relocated to Arizona for 6 more years with the relatives
Nejeep is offline   Reply With Quote Quick reply to this message
Unread 12-27-2011, 08:59 PM   #6
hdrocknroll
Registered User
1995 ZJ 
 
Join Date: Dec 2011
Location: Flint, MI
Posts: 2,271
Nejeep
thanks a lot
__________________
Always !! Keep A Firm Grip On Your Tool !!

Watch Out For The Air Hose Gone Wild!! Or Wear A Cup,: True Story


[QUOTE=rooster51;13297693] Whats the worse that can happen? Your jeeps already broke.



[/QUOTE]
hdrocknroll is offline   Reply With Quote Quick reply to this message
Reply

Tags
differential

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.