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#1 (permalink) Old 03-23-2009, 08:05 AM
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Rear Differential Noice

Hello I was hoping anyone could give me some advice. I have a 92 325is and i had a tranny service and a rear differential fluid change on my vehicle last week. the tranny new oil and new filter completely enhanced the shifting and its working amazing. THe problem is now with the rear differential. I am now hearing a clunk/rubbing noise when turning at low speed or engaging on reverse. It sound like the parking brak is engaged and you trying to move at low speeds. The mechanic top it up with new 80W90 gear oil and i think he put 1.8 q since that is what he charged me for. Any ideas on this ? is there an additive that is also require? Im kind of worry since this part can be a major repair expense.

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#2 (permalink) Old 03-23-2009, 09:18 AM
OMFG another one!?
 
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I'd have the shop check it. The noise while turning is a strong sign of worn or low gear oil.

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#3 (permalink) Old 03-23-2009, 10:18 AM
Help from over the pond
 
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You must be low on ATF, get straight back to the shop before any damage occurs.

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#4 (permalink) Old 03-23-2009, 12:56 PM
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well I went back and they guy started to give me the attitude. saying is was a straight oil change and there was no major thing to it. He test drove it and heard the sound. He was like I am sure is not the fluid. Parked the car and went to remove the other car he was working on. 10-15 mins later he pulled mine in and check it and when he opened the screw is start flowing out. of course he ego went up and started runnign his mouth. simply totally unprofessional. anyways any thoughs? he did turned the wheels when it was up in the air and there was this noice from the rear. He did not say what it was and told me to bring it saturday for diagnosys. One thing is for sure .. i got to get me a new mechanic.
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#5 (permalink) Old 03-23-2009, 01:31 PM
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any one heard of any additives for the 92 325is?

please take a look at this posting. Thanks.

http://www.bimmerwerkz.com/forum/3-s...xed-20404.html
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#6 (permalink) Old 03-24-2009, 10:58 PM
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finally got it working. for anyone with same issue I changed the oil again with mobil 1 sinthetyc 75w90 and added one bottle of lsd modifier made by Ford. Works amazing.
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#7 (permalink) Old 03-24-2009, 11:33 PM
OMFG another one!?
 
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Good to see this!

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