Between driveshaft and DIff leak!

cyberlando · Wed, Jul-04-2012, 12:59:38 PM

Not sure what is causing the leak but i got a PPI done on the car They did a inspection 2....changed the diff fluid and everything!

but when i got the car on the lift last weekend i found that there is diff fluid leaking somewhere inbetween where the drive shaft and diff connects at that flange!

should they have caught that!

about how much would it be to have this problem addressed?

VALSBM3 · Wed, Jul-04-2012, 01:18:44 PM

It's the input shaft seal, where the end of the driveshaft goes into the diff.

niart906 · Wed, Jul-04-2012, 01:48:53 PM

Common issue. It's about $50 in parts for the input flange. If it wasn't leaking before the PPI they either missed it, or over filled the diff. Either way plan on replacing it soon before you run the diff dry.

nis350 · Wed, Jul-04-2012, 03:28:22 PM

Quote:

Originally Posted by cyberlando

Not sure what is causing the leak but i got a PPI done on the car They did a inspection 2....changed the diff fluid and everything!

but when i got the car on the lift last weekend i found that there is diff fluid leaking somewhere inbetween where the drive shaft and diff connects at that flange!

should they have caught that!

about how much would it be to have this problem addressed?

It appears to be a common issues with our cars. Some with very minor leak just leave it.

I think the Indy shop charges about $600 to replace all the differential seals.

cyberlando · Wed, Jul-04-2012, 08:21:39 PM

Quote:

Originally Posted by niart906

Common issue. It's about $50 in parts for the input flange. If it wasn't leaking before the PPI they either missed it, or over filled the diff. Either way plan on replacing it soon before you run the diff dry.

is it an easy DIY or id have to drop the Diff and open it up to change the seal?

Im praying that the diff was overfilled....and if it was is there a way to tell?

would it stop leaking after it leaked out the excessive fluid?

AND

if it leaked because it was over filled and the seals were still good, does it means that it just damaged the seals since its leaking now?

sorry about the long book

pahasbimmer · Fri, Dec-14-2012, 09:02:55 PM

Quote:

Originally Posted by cyberlando

is it an easy DIY or id have to drop the Diff and open it up to change the seal?

Im praying that the diff was overfilled....and if it was is there a way to tell?

would it stop leaking after it leaked out the excessive fluid?

AND if it leaked because it was over filled and the seals were still good, does it means that it just damaged the seals since its leaking now?

sorry about the long book

sorry to bring the old(er) thread to life, but does anyone have an answer to that?

///Rob206 · Fri, Dec-14-2012, 09:40:13 PM

I've had a seeping diff for 3 years now. Never a drip.

NICKBRUM · Sat, Dec-15-2012, 01:51:31 AM

Quote:

Originally Posted by ///Rob206

I've had a seeping diff for 3 years now. Never a drip.

What he said, if its a weep your ok. When you see a drip on the ground its time for action. Doing a pinion seal is not hard but if your asking about DIY, educate yourself before diving in. The pinion nut torque sets the engagement of your pinion and ring gear. YOU HAVE TO PUT IT BACK TO THE EXACT TORQUE. If not you will ruin the gears.

Reach · Sat, Dec-15-2012, 02:40:55 AM

If it's around the input shaft, are you sure it's not grease from the driveshaft's rear CV? I was just typing about this in another thread. When I R&R'd mine, there was thick black grease all over the place. Of course, it had a good 100k miles to get like that.

cyberlando · Sat, Dec-15-2012, 01:54:29 PM

Actually I replaced the pinion seal myself didn't see a issue before pulling it but after I popped in the new one there is not a single leak in sight!

Wed, Jul-04-2012, 12:59:38 PM	#1
cyberlando Registered User Join Date: Aug 2011 Posts: 895 In the garage: '02 BMW M3 '02 BMW 330CI Reputation: 0	Between driveshaft and DIff leak! Not sure what is causing the leak but i got a PPI done on the car They did a inspection 2....changed the diff fluid and everything! but when i got the car on the lift last weekend i found that there is diff fluid leaking somewhere inbetween where the drive shaft and diff connects at that flange! should they have caught that! about how much would it be to have this problem addressed?

Wed, Jul-04-2012, 01:18:44 PM	#2
VALSBM3 AwwwYeah! Join Date: Mar 2009 Posts: 1,752 Reputation: 0 Location: Northern VA	Re: Between driveshaft and DIff leak! It's the input shaft seal, where the end of the driveshaft goes into the diff. __________________ 2002 M3 \| ESS VT1-455 \| BW Race Exhaust \| Hawk Pads \| Ground Control Suspension \| Whiteline Swaybars Custom Roll Bar \| Stripped Interior \| Bride \| G-Force \| SneedSpeed Adjustable Rear Wing \| Front Splitter SneedSpeed Brake Cooling Ducts \| D-Force LTW5 Wheels/Hoosier R6 \| OEM Rear Square Setup w/ Nitto NT01

Wed, Jul-04-2012, 01:48:53 PM	#3
niart906 Registered User Join Date: Nov 2011 Posts: 667 Reputation: 0 Location: Scranton, PA	Re: Between driveshaft and DIff leak! Common issue. It's about $50 in parts for the input flange. If it wasn't leaking before the PPI they either missed it, or over filled the diff. Either way plan on replacing it soon before you run the diff dry. __________________ 2003 ///M3 6spd Jet Black/Cinnamon (I Loan Valve Adjustment Tools! PM me...)

Fri, Dec-14-2012, 09:40:13 PM	#7
///Rob206 Unregistered User Join Date: Aug 2010 Posts: 569 In the garage: '06 SUBARU WRX '06 LEXUS IS 350 '03 BMW M3 Reputation: 0 Location: Seattle, Chengdu, Toisan, Hong Kong	Re: Between driveshaft and DIff leak! I've had a seeping diff for 3 years now. Never a drip. __________________ Mystic Blue M3 6SPD

Sat, Dec-15-2012, 02:40:55 AM	#9
Reach Registered User Join Date: Nov 2007 Posts: 2,137 Reputation: 0 Location: Raleigh NC	Re: Between driveshaft and DIff leak! If it's around the input shaft, are you sure it's not grease from the driveshaft's rear CV? I was just typing about this in another thread. When I R&R'd mine, there was thick black grease all over the place. Of course, it had a good 100k miles to get like that. __________________

Sat, Dec-15-2012, 01:54:29 PM	#10
cyberlando Registered User Join Date: Aug 2011 Posts: 895 In the garage: '02 BMW M3 '02 BMW 330CI Reputation: 0	Re: Between driveshaft and DIff leak! Actually I replaced the pinion seal myself didn't see a issue before pulling it but after I popped in the new one there is not a single leak in sight! __________________ Engine: [] Euro Headers [] Euro Cats [] OEM Section 2 [] B&B Exhaust [] BMC Filter [] UUC SSK EVO 3[] Turbo Toys V3 hub Tune: [] Euro DME Tune [] Shift Lights 6MT[] Sport Mode Memory Interior: [] Led Interior [] DICE Module[] Auxilary 3.5 jack Suspension/Handling: [] KW V3 [] Eibach F&R Sways [] Rogue Tranny mount [] UUC RTAB [] Vibratechnics Motor Mount [] SSBL [] 90A Akg Subframe Bushings []Akg Differential Bushings [] Subframe Renforcement [B] Upcoming: [] DSSR or Autosolution shifter [] Interior refresh [] Front bumper Respray [] Aftermarket Speakers & amp [] Evolve Tune

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