2003 Mercury Mountaineer V8 AWD Front differential

20

Asked by Feb 15, 2016 at 12:05 PM about the 2003 Mercury Mountaineer 4 Dr STD AWD SUV

Question type: Maintenance & Repair

I had a front diffential somehow get
cracked and blew all the gear oil out of the
differential.  All the oil was burnt!!  I've
noticed before that the front wheels would
really grab the road when doing low speed
sharp turns. , like parking the car.  Doesn't
seem like the front should be engaged to
that point to me.  Well I ordered a used
diffential and had it put in.  Car was doing
fine driving around town the last few
weeks, but front was still really grabbing
the road and binding like a 4x4.  Decide to
take it on a trip and at about 80 miles into
the trip front differential dumps all gear oil
again!!  My guess is since the front
shouldn't pull like it is then the diffential is
overheating way too much.  Is there like a
sensor or something that tells the car how
much to rely on AWD?  Can I just remove
the front axle and depend on the rear
wheels?  Really flustrated seeing how I just
put so much money into the car.  Thank for
your help.

12 Answers

4,905

dang it, somehow the differential seal was not seated properly...could be something as simple as that...an error on installation...might have even been Robot assembly...take it back to the dealer and show this condition is not normal~ can do some research for a technical service bulletin or recall....alas, this is NOT normal~ will begin lookin' for ya~

4,905

right out of the chute~ see your dealership~ 2003 Mercury Mountaineer Power Train Service Bulletin 250329 Action Number: 10028736 Service Bulletin Number: 250329 Report Date: May 01, 2009 Component: Power Train Summary: Ford: some vehicles may exhibit oil separation from the internal lube found in the unitized cartridge seal. Oil separation appears to be and is often misdiagnosed, as an axle lube leak. *pe

Best Answer
20

Wow! Thanks! I also saw a bulletin that would explain my front wheel binding also!

1 out of 1 people think this is helpful.
86,905

My Explorer did that, it turned out the special viscous clutch inside the transfer case, it locked up and was driving the front end all the time, that in turn ruined my front differential.

1 out of 1 people think this is helpful.
20

Yeah that sounds exactly like my problem then! Thanks a ton for yalls help!!

1 out of 1 people think this is helpful.
20

Tennisshoes, in what way did your differential fail. My ends up losing oil and grinds. I guessing from the differential overheating from it running too much. I just wanted to know if ours failed the same way.

86,905

Started to howl and blowing lube out of the vent.

4,905

ooo that IS ugly!~

20

Lube? As in gear oil?

86,905

Yep, and it made a real mess.

20

I've decided to just get a whole transfer case! Sound like a good idea?

4,905

maybe the replacement (like from the boneyard) will have Exactly the same problem...found this to be the case whenever I need a part the exact problem is there on the replacement part~...but if you inspect the replacement as seems okay I'd say go for it...you'll need the help of two more guys tho~

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Mountaineer

Looking for a Used Mountaineer in your area?

CarGurus has 1,478 nationwide Mountaineer listings starting at $150.

ZIP:

Search Mercury Mountaineer Questions

Mercury Mountaineer Experts

#1 Tom Demyan
Tom Demyan
Reputation 520
#2 kbro
kbro
Reputation 460
#3 FordNut
FordNut
Reputation 310
View All

Related Models For Sale

Used Ford Explorer
940 Great Deals out of 73,742 listings starting at $750
Used Ford Expedition
413 Great Deals out of 24,690 listings starting at $1,999
Used Lincoln Navigator
116 Great Deals out of 5,616 listings starting at $1,299
Used Jeep Grand Cherokee
840 Great Deals out of 68,654 listings starting at $864
Used Chevrolet Tahoe
775 Great Deals out of 28,432 listings starting at $1,500
Used Ford Escape
1,113 Great Deals out of 90,502 listings starting at $1,295
Used Dodge Durango
299 Great Deals out of 24,118 listings starting at $1,500
Used Ford F-150
2,691 Great Deals out of 211,555 listings starting at $1,000
Used Lincoln Aviator
4 Great Deals out of 280 listings starting at $2,500
Used GMC Envoy
49 Great Deals out of 2,388 listings starting at $1,800
Used GMC Yukon
517 Great Deals out of 17,114 listings starting at $1,799
Used Honda Odyssey
352 Great Deals out of 27,950 listings starting at $2,295
Used Nissan Pathfinder
413 Great Deals out of 24,808 listings starting at $999
Used Cadillac Escalade
308 Great Deals out of 10,695 listings starting at $1,900

Used Cars For Sale

2010 Mercury Mountaineer For Sale
5 Great Deals out of 91 listings starting at $7,995
2009 Mercury Mountaineer For Sale
28 listings starting at $5,990
2008 Mercury Mountaineer For Sale
3 Great Deals out of 142 listings starting at $4,495
2007 Mercury Mountaineer For Sale
5 Great Deals out of 179 listings starting at $4,599
2006 Mercury Mountaineer For Sale
7 Great Deals out of 219 listings starting at $1,974