[bestatchess]

Look for a space between the flange where the CV shaft bolts up and the side of the differential housing on the driver side. Look for gear oil leak in the same area.

The hubs do not unlock, so the front diff and front drive shaft spins all the time, even in 2wd.

Gear oil coming out the vent tube probably means you overfilled the diff a little bit. Typically not a problem, just wipe up the excess gear oil.

 

[BCBowers]

Look for a space between the flange where the CV shaft bolts up and the side of the differential housing on the driver side. Look for gear oil leak in the same area.

The hubs do not unlock, so the front diff and front drive shaft spins all the time, even in 2wd.

Gear oil coming out the vent tube probably means you overfilled the diff a little bit. Typically not a problem, just wipe up the excess gear oil.

If that's the case then it sounds like the dealer is hungry for work and will just send Nissan the bill.

I had a similar experience years and years ago with my first C5 Z06. Dealer had replaced a leaking driver's side 1/2 shaft seal (common issue) and forgot to put the limited slip additive in with the diff fluid. Well it started chattering like crazy so I took it back. Back then I didn't know as much about cars so I didn't know what was wrong. They replaced the entire differential assembly under warranty.

Knowing what I know now all they had to do was add some of the GM limited slip additive and go drive a few figure 8s in a parking lot!

 

[MJB09SRT8]

the diff is just over filled, i changed mine once and started having the same problem, if you put too much in when it heats up it will come out of the diff vent tube, once i drained some out i haven't had the problem since.

Montrose

 

[nissanbyblood]

Even though it waited 5k miles to decide it was over full and to leak out?

 

[HudsonValleyTitan]

I agree...why would they replace an overfilled diff? Sounds like they ARE just looking for work. You already have the new beefed up front diff. I don't think I'd let them change it.

 

[bestatchess]

Even though it waited 5k miles to decide it was over full and to leak out?

Depends on where it is leaking out. If it is leaking from a seal (side seals or pinion seal), you have a problem. If it is just coming out the vent tube, that is not, by itself, an indication of a problem.

 

[nissanbyblood]

It is definatly comming from up above the diff and leaking downwards. What should I do, call and talk to the mechanic or just not make an appointment? The part is supposed to be here Wednesday.

 

[bestatchess]

It is definatly comming from up above the diff and leaking downwards. What should I do, call and talk to the mechanic or just not make an appointment? The part is supposed to be here Wednesday.

If this is being done under warranty, I would let them. I would rather have a new diff than a diff with 35k. If they are charging you a bunch of money, I would call a halt. If they are doing it under warranty, I would try to get the old diff back. (they may know it is ok and want to sell it used). I would also mark the old diff so I could tell if they actually installed a new one.

 

[HudsonValleyTitan]

If this is being done under warranty, I would let them. I would rather have a new diff than a diff with 35k. If they are charging you a bunch of money, I would call a halt. If they are doing it under warranty, I would try to get the old diff back. (they may know it is ok and want to sell it used). I would also mark the old diff so I could tell if they actually installed a new one.

If it's warranty work, the old part(s) have to be sent back. Would be nice though to have a spare!

 

[nissanbyblood]

Ok guys I done some research and found out its coming out the vent tube that attaches to the air box... that said it seems like maybe I over filled it... not a big problem and I would settle with that but... why did it wait 5k miles to start puking out? The new diff would be replaced with no charge to me but I'm kinda wierd about getting major stuff like that done. I know it was probably installed a little better from factory then a job the dealership would do. I have learned not to trust people when preforming services for you because, they usually don't care about what their doing. I think I will call the service dept. and talk to the mechanic today and see what he thinks, wierd that it took me 20mins on my cell phone on the net and found out that theres probably nothing wrong with it. Shouldn't the professionals know a lil more then to jump to instant conclusions, I never told them it was making a noise and he never asks if I recently had the fluid filled.

BTW: Thanks for all your guys help and sorry I bashed so hard on the T off the gate

 

[nissanbyblood]

well...new update I decided to re drain and fill the front diff this morning because I didn't believe the technican and the fluid was as metallic silver as a color could be, here are 2 pics of Mobil 1 75w90 fluid that has 5k miles on it that I drained and filled at 30k. I let my buddy whose a toyota tech look at the fluid and he said to definatly let them replace my diff. I also noticed that my windshield washer fluid is leaking from the resivoir. Two spots on my driveway each day from a truck that I'm paying nearly $500 buck a month for? This is unacceptable Ive been to the dealership 8 times with this thing in 7 months and its an hour drive... I put 99k miles on my 1st gen frontier and never visited once... thinking that I shouldn't have traded now.