2007~2015 CX-9 Rear diff problem solved

i don't think you'll get an obd code with this problem as it is not engine related. I'd say try to lower the front of the diff to see if the wires seems so start to cut, they usually cut right where they enter the diff. They start to corrode first.
 
i don't think you'll get an obd code with this problem as it is not engine related. I'd say try to lower the front of the diff to see if the wires seems so start to cut, they usually cut right where they enter the diff. They start to corrode first.
Ok thanks for the reply! I was expecting a code and wanted to validate it since you indicated in post #1 getting code p1887. How did you get that code? I am preparing my gear to get this job started over the weekend. I managed to take close videos and pictures of the wires entering the unit but I can't see any problem. I will first try to lower the diff to have a clear view before removing it all. Again thanks for your advices.
 
hmm yeah just saw that lol, i didn't remember it gave me a code, well maybe you are right after all. It might be something inside the diff. Honestly from that point i don't really know as if the wire was cut, seems like yes you would get a code.

sorry i can't be of more help
 
Ok here is the update on my problem. I did repair it. Huge thanks to puma for starting this thread and Mixamillian for the youtube video. Everything went pretty well other than the fact that 4 bolts out of 8 snapped on me while removing the coupling unit from the diff! So I'd say if you plan on doing this repair, remove the drive shaft, remove the coupling unit brackets, lower the diff while supporting it with a jack to allow it to lean torward the ground (careful not to strecth too much and damage the diff cable here). That will give you the chance to shoot PBBlaster from behind the bolt and let it penetrate over night.
If you feel too much resistance while removing the bolts you could still use some heat on the housing around the bolts and it should come off.
I was finally able to remove the snapped bolt with a lot of heat and good vice grips (luckily they were sticking out long enough!)
So in the end, I'm very happy that I was able to repair this car that I like very much. Too bad I am now going to sell it since I bought a truck which fits more my needs these days.
 
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Mazda CX-9 GS AWD
Ok here is the update on my problem. I did repair it. Huge thanks to puma for starting this thread and Mixamillian for the youtube video. Everything went pretty well other than the fact that 4 bolts out of 8 snapped on me while removing the coupling unit from the diff! So I'd say if you plan on doing this repair, remove the drive shaft, remove the coupling unit brackets, lower the diff while supporting it with a jack to allow it to lean torward the ground (careful not to strecth too much and damage the diff cable here). That will give you the chance to shoot PBBlaster from behind the bolt and let it penetrate over night.
If you feel too much resistance while removing the bolts you could still use some heat on the housing around the bolts and it should come off.
I was finally able to remove the snapped bolt with a lot of heat and good vice grips (luckily they were sticking out long enough!)
So in the end, I'm very happy that I was able to repair this car that I like very much. Too bad I am now going to sell it since I bought a truck which fits more my needs these days.

Good to know you could do the repair. I just gave mine to my son and reminded him its only a Front Wheel drive truck now ;) I had the water pump replaced 2 yrs ago so the engine is good. Luckily a mechanic friend did it for 1/2 the cost of a shop. The only thing left to fail is the transmission, as we get an occasional shudder under low load in 3rd,4th gear changes.
 
Good to know you could do the repair. I just gave mine to my son and reminded him its only a Front Wheel drive truck now ;) I had the water pump replaced 2 yrs ago so the engine is good. Luckily a mechanic friend did it for 1/2 the cost of a shop. The only thing left to fail is the transmission, as we get an occasional shudder under low load in 3rd,4th gear changes.
I am not sure about the problem you have with the transmission but I had a weird shift behavior with the transmission on my 2013. It happened when cold at low speed and it was solved when I brought it to the dealer for a partial transmission fluid flush. I told them about the weird shift behavior and they told me they would try a software update...I was not sure about the success but it did solve my problem! Again, not sure about your problem but maybe you could try.