After getting a bunch of help up here and figuring out where third gear went in my car, I am now in search of some new help.
I have had an ever increasing whine in the car for the last 60 days or so. I bought the car Oct '16 and knew it had massive hail damage (over 180 ding/dents, I figured I could teach myself PDR) and I knew it had no third gear and usual AW55/50 issues. She has about 173k on her now. I spent some time relearning about the trans and have done a bunch of work on it including the B4 band recapture. Once I got third back it was time to start the whole STAGE 0 things.
First thing was Haldex unit. Gen 1, finding a filter for it is a pain. Everything pulled out and drained. Replaced and refilled. Haldex seems to be working better but still not sure if it is working 100% of the time like it should.
Second was the Angle gear, after having to use explosives to get the drain/fill plug out. Previous idiot must have used an air gun. So I put my finger in the hole and found nothing there. WTF... who the hell lets this happen. So it is now full again and will be redone in a couple of weeks just to make sure all is okay.
Last is to get the rear diff serviced. Here lies the problem. HOW THE HELL DOES ONE GET THAT DRAIN/FILL PLUG OUT? The location just plain sucks. Do I have to drop the exhaust? What is on the other side of the plate/mount that is to the left and above it looking to the front from the back. What cat I yank out or loosen and move to get to the bolt. I am trying to remove the one on the rear cover on the upper left. I am at a loss right now.
The big problem with just leaving it is that 1, I have no idea if it has ever been changed. 2, I have the whine/howl that starts at about 25 and get a little louder at 65. Was having the noise move around and now that the Haldex, angle gear, and trans are all serviced, it seams to be coming from the rear for sure. Odd thing is sound is less when turning right, cresting hills, or anything that unloads suspension. I have put the car in the air and checked all bearings and they sound great. I have checked THE driveline and again it seems fine.
Now all of the fluids looked horrible overall. I didn't know Haldex fluid could get that black. What little bit of fluid I got out of the angle gear was just as black. The trans was serviced by a used car dealer before I bought the car and their idiot pulled the 27mm bolt to fill the trans. STUPID, STUPID, STUPID. Thankfully I was able to recapture the B4 band and after replacing the all of the solenoids other than SLT, SLU, SLS and doing a proper service, the trans is happy and shifting great so far, been about 800 miles since fix.
So if anyone has any ideas or clues as to what I can move, remove, shift, use the blue wrench on, or what grade of explosives work best in this case, it would be great. I have tried offset wrenches, sockets with extensions, shallow universal joint sockets, and up to 18 inches of extra leverage. Nothing has worked and I really don't want to strip or round the plug.