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

5,045

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~

5,045

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.
88,795

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.

88,795

Started to howl and blowing lube out of the vent.

5,045

ooo that IS ugly!~

20

Lube? As in gear oil?

88,795

Yep, and it made a real mess.

20

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

5,045

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 1,108 nationwide Mountaineer listings starting at $1,000.

ZIP:

Search Mercury Mountaineer Questions

Mercury Mountaineer Experts

#1 Tom Demyan
Tom Demyan
Reputation 540
#2 kbro
kbro
Reputation 460
#3 FordNut
FordNut
Reputation 310
View All

Related Models For Sale

Used Ford Explorer
760 Great Deals out of 75,119 listings starting at $750
Used Ford Expedition
388 Great Deals out of 24,363 listings starting at $1,951
Used Lincoln Navigator
85 Great Deals out of 5,524 listings starting at $3,485
Used Jeep Grand Cherokee
804 Great Deals out of 70,393 listings starting at $995
Used Chevrolet Tahoe
630 Great Deals out of 27,855 listings starting at $600
Used Ford F-150
2,431 Great Deals out of 211,451 listings starting at $895
Used Ford Escape
1,033 Great Deals out of 93,422 listings starting at $1,500
Used Dodge Durango
250 Great Deals out of 22,965 listings starting at $1,500
Used Toyota 4Runner
292 Great Deals out of 20,775 listings starting at $2,700
Used Nissan Pathfinder
309 Great Deals out of 23,324 listings starting at $2,250
Used GMC Envoy
55 Great Deals out of 2,023 listings starting at $1,999
Used Chevrolet TrailBlazer
73 Great Deals out of 4,351 listings starting at $650
Used Lincoln Aviator
4 Great Deals out of 217 listings starting at $2,495
Used Honda Pilot
360 Great Deals out of 20,687 listings starting at $2,199

Used Cars For Sale

2010 Mercury Mountaineer For Sale
3 Great Deals out of 74 listings starting at $6,450
2009 Mercury Mountaineer For Sale
18 listings starting at $5,995
2008 Mercury Mountaineer For Sale
4 Great Deals out of 131 listings starting at $4,995
2007 Mercury Mountaineer For Sale
6 Great Deals out of 168 listings starting at $3,870
2006 Mercury Mountaineer For Sale
162 listings starting at $1,900