Xoutpost.com

Xoutpost.com (https://xoutpost.com/forums.php)
-   X5 (E53) Forum (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/)
-   -   Danny's X5 4.6 Thread (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/105208-dannys-x5-4-6-thread.html)

CleanIsFast 01-29-2017 09:29 AM

I would be amazed if it was the torque converter and it didn't show any codes. Keep us posted

X53Jay4.8is 01-29-2017 10:03 AM

Quote:

Originally Posted by CleanIsFast (Post 1100586)
I would be amazed if it was the torque converter and it didn't show any codes. Keep us posted

True that why I suggested hooking up the scanner and seeing what codes are present. Its a good measure before tearing into anything. If there are no codes then it may just be the transfer case.

thrillcat 01-29-2017 02:53 PM

Not sure which transfer case you have, but I have an ATC500 in my garage off my old '05 4.8 that you can have if you pay the shipping.


Sent from my iPhone using Tapatalk

dannyzabolotny 01-29-2017 07:11 PM

Quote:

Originally Posted by thrillcat (Post 1100613)
Not sure which transfer case you have, but I have an ATC500 in my garage off my old '05 4.8 that you can have if you pay the shipping.


Thanks for the offer but I have the older style transfer case that's all mechanical with a set 40/60 front/rear ratio.

-----------

Good news! I jacked up the X5 earlier today to check for what was causing the grinding, and I immediately saw that the front driveshaft was loose. Looks like it slipped out a bit and started grinding against the transfer case instead of being turned. It threw some grease around as well:

https://uploads.tapatalk-cdn.com/201...3555f17837.jpg

I turned it by hand and I immediately found that it was causing the grinding when I was towing it. The super loud metal on metal grinding while in gear was probably the transfer case grinding against the disconnected driveshaft.

https://vimeo.com/201579934

I then set out to remove the front driveshaft to investigate further. All I had to do was remove the lower reinforcement plate (six 16mm bolts) and that gave me access to the front differential where the driveshaft was attached via a flex disc (guibo). I undid the bolts on that and then I was able to remove the driveshaft. The flex disc looked quite new and the splines on the driveshaft were greased with purple grease so it looks like somebody's serviced it recently, probably when the transmission got rebuilt by the previous owner. Check out how worn the driveshaft splines are:

https://uploads.tapatalk-cdn.com/201...d322fe1a10.jpg

So it looks like I'll need a new front driveshaft. The splines in the transfer case didn't look bad at all so I think the transfer case is fine. Should I get one of the "improved" front driveshafts that are a half inch longer? I feel like that would help prevent something like this in the future. Any recommended sources for a front driveshaft?

After removing the driveshaft, I thought I could drive the X5 as RWD, and I immediately got happy thoughts of doing smokey burnouts. Once I lowered the X5 back to the ground I found that this would not work. The good news is that there's no more grinding while in gear, the bad news is that the X5 still doesn't move while in gear, even while on the throttle. I assume the transfer case requires a front driveshaft connection (aka resistance) to work correctly?

Just to check if the transfer case was okay otherwise, I jacked up the rear of the X5 and rotated the driveshaft. No grinding and everything rotated just fine, so everything's good with the rear portion of the drivetrain.

bcredliner 01-29-2017 07:14 PM

Quote:

Originally Posted by dannyzabolotny (Post 1100545)
Sad news, the X5 broke last night :( I was driving it home from work and everything was fine but as soon as I turned into my neighborhood I heard a loud grinding and the X5 stopped moving. Now whenever I put it into D or R it makes a horrible metallic grinding noise. I'm thinking it's either a bad torque converter or a bad transfer case. When I pushed the X5 down the street to park it I heard quite a bit of grinding noise, even with the transmission in neutral. There are no codes or check engine lights, and the transmission shifted perfectly fine right up until this happened.

I made a video about it for my YouTube channel, which you can see here: https://www.youtube.com/watch?v=ZHm9oi-jAng



The grinding noise can be heard at 0:42. It's quite loud.

Thankfully this happened only a few blocks away from my house, so I didn't need to call a tow truck. I parked the X5 on the street last night and this morning I went to Harbor Freight to buy a tow strap. I dug my 540i touring out of the garage for the first time in like a month and that's what I used to tow the X5 (you can see that in the video around 4:30). The 540i did just fine with the towing, while my girlfriend steered the X5 and applied the brakes. The X5's engine still runs perfectly fine so she had power brakes and steering.

https://c1.staticflickr.com/1/683/32...e8ea7285_b.jpg

I'm going to jack up the X5 on four jack stands tomorrow and run the engine with the transmission in gear to see what's causing that awful grinding noise.

Depending on what's broken, this might be the end of the line for this X5... If the transmission itself is bad then fixing it would cost more than the X5 is worth, unless I just sourced another used 5HP24 with a questionable history. Plus isn't the 4.6's transmission a little different from a standard 5HP24?

Worst comes to worst I can make all my money back from parting out this X5, and I can pop the freshly rebuilt 4.6 engine into my touring since it's a plug and play swap (aside from swapping the oil pan/oil pump/oil separator).


The 4.6 transmission is the the stock 5hp24. The torque convertor is different in the 4.6.

AV8R4AA 01-30-2017 11:22 AM

Hello Danny,
I sent you my valve covers.
Please check your mailbox.
Also can I get a contact number?

Greg

dannyzabolotny 01-31-2017 01:02 PM

So I've been doing a bit of research and I think I'll be going with Cobra Transmission to source the parts for this job. They have brand new driveshafts with the 1" extended spline for $310. The only catch is that the extended driveshaft requires removing the transfer case to install it. Since I'll be removing the transfer case I figured I'd do a rebuild on it as well, being that it has 214k miles on it. A new chain is $82, new bearings are $20, new seals are $55, and a new front output shaft is around $400. So for under $1000 I'll have the driveshaft and transfer case all sorted, not bad. It honestly sounds like a pretty fun job.

semcoinc 01-31-2017 01:29 PM

That's an awesome approach Danny and one that will surely give you truly long-term reliability of that part of the drive train. :thumbup:

That's kinda how I like to roll with my vehicles that I plan on keeping long term. If you gotta touch something and it's got a lot of miles and/or time in use on it, then give it a makeover and cry only once about the overhaul/repair/replacement efforts.

:thumbup: :thumbup:

Mike

dannyzabolotny 01-31-2017 01:48 PM

Quote:

Originally Posted by semcoinc (Post 1100852)
That's an awesome approach Danny and one that will surely give you truly long-term reliability of that part of the drive train. :thumbup:

That's kinda how I like to roll with my vehicles that I plan on keeping long term. If you gotta touch something and it's got a lot of miles and/or time in use on it, then give it a makeover and cry only once about the overhaul/repair/replacement efforts.

:thumbup: :thumbup:

Mike

Yep, I figure it's better to replace everything properly now and not wait until it breaks down while towing a car in the middle of the desert. I do intend to do some pretty heavy long-distance towing with this X5 in the future so I'm glad to be working out all these kinks right now while I'm still rolling around in town.

The two reasons I bought an X5 were 1) to tow home a wrecked E39 M5 parts car when I find one and 2) to have something to drive while I work on my 540i touring.

semcoinc 01-31-2017 02:07 PM

Great planning for an >200K miles vehicle Danny!

When you get around to it I'm sure you'll be giving that tranny some attention.

Mike


All times are GMT -4. The time now is 04:13 AM.

vBulletin, Copyright 2019, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved.