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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 03-10-2011, 08:42 AM   #1
TX_Bullet
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Rear diff is toasted!!!

Yep heard a sound while driving last night.....left off the gas and had a nasty vibration followed with a metal winding sound.
Looked under the car to see it leaking out the input flange.

Seems like the pinion bearing went out.

So.....will a non XI different fit my car
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Quote:
Originally Posted by jbeurotech View Post
Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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Old 03-10-2011, 08:43 AM   #2
Kubica
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Quote:
Originally Posted by TX_Bullet View Post
Yep heard a sound while driving last night.....left off the gas and had a nasty vibration followed with a metal winding sound.
Looked under the car to see it leaking out the input flange.

Seems like the pinion bearing went out.

So.....will a non XI different fit my car
Yes.

Do you have an MT or AT?
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Old 03-10-2011, 09:00 AM   #3
Kubica
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If it's manual you will need a diff from another xi. If it's auto, a rear diff from any automatic 325 or 323 will work.
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Old 03-10-2011, 09:38 AM   #4
xixixi
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As far as I know any/all diffs will fit as long as you get the proper gear ratio. Shouldn't have to come from an xi the rear diffs are all the same.
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Old 03-10-2011, 09:35 AM   #5
FelizPrim3
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yeah i experienced that too, but my wheels locked up on the highway and my car spun. i then replaced the diff with a used one. two weeks later when driving i heard a thump in the rear and clanking and vibrations occured. so i replaced it gain with another used one and it vibrates a little when rippin it in second gear
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Old 03-10-2011, 10:42 AM   #6
TX_Bullet
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Excellent I found one local for 200 out of a 04 325i and mine is auto tragic
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Quote:
Originally Posted by jbeurotech View Post
Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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Old 03-10-2011, 12:13 PM   #7
TX_Bullet
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........and pulled out. Turning that input flange feels all messed up
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Quote:
Originally Posted by jbeurotech View Post
Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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Old 03-10-2011, 01:24 PM   #8
Kubica
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It was most likely leaking and ran out of fluid. When did you change the fluid last?
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Old 03-10-2011, 07:03 PM   #9
TX_Bullet
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I assure you it wasn't leaking. I changed fluid a month ago and it was very low. Previous didn't seem to keep up with maintenance well.

Fluid I used was Mobil 1 75w90ls
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Quote:
Originally Posted by jbeurotech View Post
Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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Old 03-10-2011, 07:49 PM   #10
Kubica
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Quote:
Originally Posted by TX_Bullet View Post
I assure you it wasn't leaking. I changed fluid a month ago and it was very low. Previous didn't seem to keep up with maintenance well.

Fluid I used was Mobil 1 75w90ls
Well if it was low before you changed it there had to be a leak.

See if you can figure out what failed- the rear cover unbolts and the output flanges pop off.
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Old 03-10-2011, 09:23 PM   #11
TX_Bullet
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How hard us it to change the gear sets out with these diffs. I was tempted to swap the gear into a 293 diff I got laying around but never did it before
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Quote:
Originally Posted by jbeurotech View Post
Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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Old 03-10-2011, 10:52 PM   #12
Kubica
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Quote:
Originally Posted by TX_Bullet View Post
How hard us it to change the gear sets out with these diffs. I was tempted to swap the gear into a 293 diff I got laying around but never did it before
It's not easy.
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Old 03-11-2011, 08:34 AM   #13
xixixi
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I swapped all the flanges on my diff. Input/output. Not hard just take your time. Use a punch/welding marker to mark the input flange with the nut. That way you can re tighten the input flange to spec. I put a brutal 4k on my diff since then. I used a shock proof diff fluid that was recommend (name escapes me atm) Blue something iirc
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Old 03-13-2011, 08:04 AM   #14
TX_Bullet
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This incident has given me no more hope with this car. My next worry was the tranny with the little gear light coming on once a month.

So......I sold it for 5k within 3 hours of posting it on Craigslist

My next bimmer will be a e30 and will be a project
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Quote:
Originally Posted by jbeurotech View Post
Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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Old 03-13-2011, 11:49 AM   #15
Kubica
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"Hey y'all new xi owner here. I just got a great deal on this car off craigslist. Anyway which sponsor sells the cheapest black grills? I saw a set on eBay. Oh and my transmission light is flashing should I bring it to the dealer?"

I give it two weeks.
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Old 03-13-2011, 01:40 PM   #16
TX_Bullet
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Classic noobs......fortunately it already had black grills. And that tranny should hold up until they decide to swap fluids
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Quote:
Originally Posted by jbeurotech View Post
Sometimes the Cheapest quote is the most expensive in the end
Number of Destroyed Newb Destroyers- 1
The Mods

Power Flex FCAB
Much more coming.....
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