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Discussion Starter · #1 ·
Drove the R a bit hard off the line ( no launching ) and heard a clunk sound then immediately saw the slipping warning light come on, AWD stopped working and i drove slowly to the house.
Went to my euro specialist mechanic this morning and got the car up in the air, the rear wheels are not spinning and we could hear a slight rubbing sound. The Haldex, pump, sensor has been replaced replaced recently so it is definatly the angle gear or sleeve. My fingers are crossed on the collar sleeve and not on the actual gears inside the transfer case, when driving back to my home the car drove fine and i wasn't hearing any loud clunks or grinds from inside the vehicle so i suspect the collar sleeve more than anything else.

Ordered a new collar sleeve ( 125$ ) with my mechanic and i have a schedule next monday to replace the old one and see if everything starts working properly.

This AWD is going to drive me crazy lol, do i need to change everything to get it to work ! 4/5 parts changed to get it running so far, and i definatly hope the angle gears are intact, the car will receive a new sleeve even if monday we diagnose that it's the transfer case gears instead.

:thumbdown::(
 

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I wouldn't drive it any more. More of a chance of wearing your angle gear splines.

From my electronic gismo- Galaxy S6
 

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Does your 125 include the assy. kit with the 3 bushings?
 

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Discussion Starter · #4 ·
Does your 125 include the assy. kit with the 3 bushings?
No idea about the bushings, we only talked about the sleeve at that time. He ordered me a brand new sleeve and told me it was going to cost 125$, that doesn't include the labor to install the new sleeve and check the angle gears condition.
 

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Discussion Starter · #5 · (Edited)
I wouldn't drive it any more. More of a chance of wearing your angle gear splines.

From my electronic gismo- Galaxy S6
The damage is already done, the sleeve collar splines got completely busted and the driveshaft turns freely in it, I'm however going to remove the AWD fuse just in case and keep driving the car as i need it to get to my daily job.

The car receives a new sleeve next monday and we will take the transfer case appart to check out the bevels as well, i highly doubt they are damaged since this car is on its first sleeve failure. The sleeve was probably already worn out since it busted out from a really simple green light take off without any hard laucnhing.

Gonna take pictures of my old sleeve and the bevels, will post pictures here !
 

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I would guess that the splines on the angle gear side have stripped too. The angle gear is sealed so debris won't be getting into it, but it will still be useless unless you plan on welding the new collar to the angle gear side.

Don't be suprised when you get told your angle gear also needs replacing.

what the hell are the bevels?
 

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Discussion Starter · #7 · (Edited)
I would guess that the splines on the angle gear side have stripped too. The angle gear is sealed so debris won't be getting into it, but it will still be useless unless you plan on welding the new collar to the angle gear side.

Don't be suprised when you get told your angle gear also needs replacing.

what the hell are the bevels?
Bevel gears is just another word for angle gears, it's possible that the angle gears are damaged too, but i have seen many volvos go thru multiple sleeves without any damage to the bevels, so i still keep my fingers crossed that they are okay since mine is on it's first sleeve at 156k.

I still drove the car since i didnt realize it the moment it happened and i wasnt hearing any loud grinds or clunks from the transfer case, only a slight rubbing sound that mostly comes from the driveshaft spinning in the sleeve.

I'm mostly guessing that i woulda heard a lot of grinds and clunks if the angles were actually shot.

Stop making me nervous and cross your fingers with me until monday lol.

Will post results monday so we will all know !
 

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Yes, as pointed out above, pull the unit and inspect it before you come to any conclusions about what needs to be replaced. If you are lucky its just a the collar, but usually once they wear and strip the angle gear splines are shot too.
 

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Discussion Starter · #9 ·
So i took the car out this morning and wanted to turn it into a FWD only while i am waiting for my angle gear to get fixed.

I went in the trunk to remove the AWD fuse, anti-skid message comes on like expected, i start to drive and at around 60+ km/h i can start to hear a VERY VERY loud whining noise ( no grind or clunks ) and it goes louder the more i accelerate. I pulled over and at first i though my alternator was going crazy, put back the fuse in because this didnt happen the first time i got back home with my broken sleeve or angle gears, i took off again and no more whining sound, not even a single noise from the broken AWD trying to engage. I try the one click handbrake method to disable the AWD and there is no whining sound like when i disabled it with the fuse.

While i was parked to see what was going on i tested if i could recreate the whining when giving gas in park and even passed 5k+ rpms there was absolutely no whine, so it doesnt come from the engine or alternator/turbo.

What happened exactly and why did it make this insane whine noise when i removed the fuse but doesnt do it when i do the handbrake trick ?

ty !
 

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With the haldex energized the system will remained coupled and cut down the speed differential between the stripped splines. When not the drag of the lube and bearings is going to cause more of a difference so just leave it energized.
 

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Discussion Starter · #11 · (Edited)
With the haldex energized the system will remained coupled and cut down the speed differential between the stripped splines. When not the drag of the lube and bearings is going to cause more of a difference so just leave it energized.
Thanks for the input !

Should i still do the handbrake trick and disable DSTC ?

I need to go to work everyday until next monday when i get the sleeve replaced and gears checked out, cannot get it fixed if i cant get to work hehe.
 

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Just drive it normal, you are not saving anything by pulling fuses or lifting your handbrake. The splines are stripped and the damage is done and nothing is going to undo it or make it better.
 

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Discussion Starter · #13 ·
Just drive it normal, you are not saving anything by pulling fuses or lifting your handbrake. The splines are stripped and the damage is done and nothing is going to undo it or make it better.
Thanks bro.

I have a question for you though, do you usually drive with DSTC on or off ?

I have a strange feeling that DSTC contributed to my angle gear failure, hard to describe but when it broke i went WOT with dstc on and i think i hit a bump which sent power to the back due to front wheels slipping and it gripped so hard that i heard a loud bang right after.

I might be over paranoid but after the repairs i am 100% of the time going to disable dstc in summer and only enable it during winter in heavy snow/ice.
 
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