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AWD: driving with bad rear diff in 2WD (FW) mode ? #4608985
12/20/17 06:54 AM
12/20/17 06:54 AM
Joined: Apr 2015
Posts: 386
Reunion Island
Superflan Offline OP
Superflan  Offline OP
Joined: Apr 2015
Posts: 386
Reunion Island
Hi,

today, my wife's car (Koleos in sig) began to make strange noises. After visual inspection (without tearing anything apart but the wheels), I went for some test drive. It seems to come from the rear differential (it's an AWD vehicle).

It goes like a HARD clunk, with some wheel locking when it happens. If I switch to 2WD mode, so far it stopped to clunk but there's some now some bad gears or worn bearings.

Do some of you think that, awaiting rear diff replacement, the vehicle can be driven in 2WD mode (fwd only) without causing direct severe injury from a shaft that would break, some wheel lock, or something along this ?

Right now I'm going to drain the rear diff oil to see if there's some big chunks of metal in it.


Peugeot Partner 1.9 D, 5W40 C3, 245000 Km, running on WVO
Wife's Mitsubishi Outlander PHEV, dealerís overfilled, 16000 Km
Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan] #4609003
12/20/17 07:22 AM
12/20/17 07:22 AM
Joined: Oct 2008
Posts: 19,091
Sunny Florida
SteveSRT8 Offline
SteveSRT8  Offline
Joined: Oct 2008
Posts: 19,091
Sunny Florida
Lots of 4WD fans have used this method to get home after something breaks in their rear driveline.


"In a democracy, dissent is an act of faith."
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Best ET-12.79 @ 111 mph
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Just like we go to Publix
Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: SteveSRT8] #4609004
12/20/17 07:25 AM
12/20/17 07:25 AM
Joined: Apr 2015
Posts: 386
Reunion Island
Superflan Offline OP
Superflan  Offline OP
Joined: Apr 2015
Posts: 386
Reunion Island
Originally Posted By: SteveSRT8
Lots of 4WD fans have used this method to get home after something breaks in their rear driveline.


Good to hear that, but in my case it's more doing something like approx. 1000 miles before getting parts replaced...

Maybe by emptying diff oil and removing the two rear halfshafts ?

Last edited by Superflan; 12/20/17 07:28 AM.

Peugeot Partner 1.9 D, 5W40 C3, 245000 Km, running on WVO
Wife's Mitsubishi Outlander PHEV, dealerís overfilled, 16000 Km
Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: SteveSRT8] #4609062
12/20/17 08:44 AM
12/20/17 08:44 AM
Joined: Dec 2016
Posts: 6,259
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,259
Waco, TX
Originally Posted By: SteveSRT8
Lots of 4WD fans have used this method to get home after something breaks in their rear driveline.


I have also been there, done that.


As per your Koleos 2.0 .... let us know what you find when you pull the cover off the diff FIRST


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Linctex] #4609084
12/20/17 09:11 AM
12/20/17 09:11 AM
Joined: Apr 2015
Posts: 386
Reunion Island
Superflan Offline OP
Superflan  Offline OP
Joined: Apr 2015
Posts: 386
Reunion Island
Originally Posted By: Linctex
As per your Koleos 2.0 .... let us know what you find when you pull the cover off the diff FIRST


Seems that the bolts on the upper side of the diff aren't accessible enough for me to pull out the cover without removing the diff from the driveline frown I just flushed the oil and this is what I found :

Oil leak from halfshafts, but the oil quantity in there was near OK (0.55l, found 0.45):


Left: fill plug, Right: drain plug with magnet and a lot of metal


Clean drain plug:


Shiny oil:


1-5mm metal chunks (found a lot but didn't take the pic):


Peugeot Partner 1.9 D, 5W40 C3, 245000 Km, running on WVO
Wife's Mitsubishi Outlander PHEV, dealerís overfilled, 16000 Km
Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan] #4609090
12/20/17 09:22 AM
12/20/17 09:22 AM
Joined: Mar 2017
Posts: 5,472
Soviet State of Washington
PimTac Online content
PimTac  Online Content
Joined: Mar 2017
Posts: 5,472
Soviet State of Washington
Ouch. How hard is it for you to get a diff considering where you are?


2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter

Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan] #4609092
12/20/17 09:25 AM
12/20/17 09:25 AM
Joined: Jan 2011
Posts: 2,944
PV Az
AZjeff Offline
AZjeff  Offline
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Posts: 2,944
PV Az
What the heck is a Koleos? You say you had some wheel lock with the rear engaged, would there be a concern the chunks could get somewhere bad when disengaged while your wife is driving?

Trade cars so you get to deal with it until fixed?


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
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Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan] #4609093
12/20/17 09:25 AM
12/20/17 09:25 AM
Joined: Mar 2017
Posts: 5,472
Soviet State of Washington
PimTac Online content
PimTac  Online Content
Joined: Mar 2017
Posts: 5,472
Soviet State of Washington
I had to look up Koleos since itís an unknown name to me. From Renault-Nissan. Looks similar to a Rogue here but some differences. What year is yours?


2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter

Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: PimTac] #4609099
12/20/17 09:32 AM
12/20/17 09:32 AM
Joined: Apr 2015
Posts: 386
Reunion Island
Superflan Offline OP
Superflan  Offline OP
Joined: Apr 2015
Posts: 386
Reunion Island
Originally Posted By: PimTac
Ouch. How hard is it for you to get a diff considering where you are?


We can have common spare parts here but a rear differential... must fetch from Europe or Korea. Approx 1000 euros (used one) + shipping... + random delay (could be weeks).

I was planning to do major suspension work (shocks, arms, ...), I guess I will have to do that later, money-wise.


Peugeot Partner 1.9 D, 5W40 C3, 245000 Km, running on WVO
Wife's Mitsubishi Outlander PHEV, dealerís overfilled, 16000 Km
Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: AZjeff] #4609106
12/20/17 09:39 AM
12/20/17 09:39 AM
Joined: Apr 2015
Posts: 386
Reunion Island
Superflan Offline OP
Superflan  Offline OP
Joined: Apr 2015
Posts: 386
Reunion Island
Originally Posted By: AZjeff
What the heck is a Koleos? You say you had some wheel lock with the rear engaged, would there be a concern the chunks could get somewhere bad when disengaged while your wife is driving?

Trade cars so you get to deal with it until fixed?


I guess Iíll flush and drive the diff many times with some cheap oil till it comes clear, since thereís no load on the gears it should be okay

Trade cars? Lol she cringe at the idea of driving my old Toyota Yaris, or my old Renault Kangoo smirk In fact, sheís driving 100 miles a day, doing door-to-door (visiting nurse). So sheís almost dependant of comfort, auto trans, and ground clearance, all of which my cars donít have.


Peugeot Partner 1.9 D, 5W40 C3, 245000 Km, running on WVO
Wife's Mitsubishi Outlander PHEV, dealerís overfilled, 16000 Km
Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: PimTac] #4609112
12/20/17 09:41 AM
12/20/17 09:41 AM
Joined: Apr 2015
Posts: 386
Reunion Island
Superflan Offline OP
Superflan  Offline OP
Joined: Apr 2015
Posts: 386
Reunion Island
Originally Posted By: PimTac
I had to look up Koleos since itís an unknown name to me. From Renault-Nissan. Looks similar to a Rogue here but some differences. What year is yours?


2013. Itís a Renault-Nissan-Samsung, sold as QM5 in Korea


Peugeot Partner 1.9 D, 5W40 C3, 245000 Km, running on WVO
Wife's Mitsubishi Outlander PHEV, dealerís overfilled, 16000 Km
Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan] #4609124
12/20/17 09:48 AM
12/20/17 09:48 AM
Joined: Mar 2017
Posts: 5,472
Soviet State of Washington
PimTac Online content
PimTac  Online Content
Joined: Mar 2017
Posts: 5,472
Soviet State of Washington
Originally Posted By: Superflan
Originally Posted By: PimTac
I had to look up Koleos since itís an unknown name to me. From Renault-Nissan. Looks similar to a Rogue here but some differences. What year is yours?


2013. Itís a Renault-Nissan-Samsung, sold as QM5 in Korea





Thanks for that info. Only four years old and the differential goes out? Has to be a fluke or it has been driven hard. How was the lube? Any water?


2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter

Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: PimTac] #4609125
12/20/17 09:53 AM
12/20/17 09:53 AM
Joined: Apr 2015
Posts: 386
Reunion Island
Superflan Offline OP
Superflan  Offline OP
Joined: Apr 2015
Posts: 386
Reunion Island
147000Km, factory fill (I was planning to finally change the oil), Renault specs it as lifetime fill. We bought the vehicle used with 25000km back in 2014.

Nissan specs the same diff (R145, same as rogue) for 50000km OCI.

I guess the severe service and the lack of oil change killed it prematurely.

No visible water in oil for now.

Do anyone knows how to tell if another R145 from another vehicle should be a bolt-on?

Last edited by Superflan; 12/20/17 09:54 AM.

Peugeot Partner 1.9 D, 5W40 C3, 245000 Km, running on WVO
Wife's Mitsubishi Outlander PHEV, dealerís overfilled, 16000 Km
Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan] #4609140
12/20/17 10:08 AM
12/20/17 10:08 AM
Joined: Apr 2015
Posts: 386
Reunion Island
Superflan Offline OP
Superflan  Offline OP
Joined: Apr 2015
Posts: 386
Reunion Island
About the cover, it clamps the halfshafts seals with the other part of the case.


Peugeot Partner 1.9 D, 5W40 C3, 245000 Km, running on WVO
Wife's Mitsubishi Outlander PHEV, dealerís overfilled, 16000 Km
Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan] #4609144
12/20/17 10:10 AM
12/20/17 10:10 AM
Joined: Nov 2008
Posts: 12,558
NH
supton Offline
supton  Offline
Joined: Nov 2008
Posts: 12,558
NH
Well, looks like the oil made it to the end of life for that diff. So it was a lifetime fluid, eh?

If it's knocking then I'm guessing it'll eventually go. But if it's noise free in 2WD... perhaps you can just avoid using 4WD unless it's actually needed.

Question: is this a part time or full time AWD system? I have heard of some trucks having a proper center diff and "auto 4WD" will leave the center diff unlocked: but I thought most "AWD" vehicles simply did not use any user-selectable switch for 2WD.

I'm a little concerned if you left it in 4Hi "all the time" and thus this is wear coming from drivetrain binding.


2011 Toyota Camry, base, 2.5L/6MT, 163k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 144k, ours
1999 Toyota Camry LE, 2.2L/4AT, 190k, his
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