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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

4r70w coated in fluid help!

  • Thread starter Thread starter KBExperience
  • Start date Start date Oct 26, 2009

KBExperience

Active Member
Jun 21, 2009
466
1
49
Houston
Oct 26, 2009
#1
  • Oct 26, 2009
  • #1
Hey Guys,

While i was under my car changing out my shifter i noticed that the back end of the tranny is coated in red (tranny) fluid.. is this really bad? or is it probably just a seal going out?

-Kyle
 

VEE EIGHT

Member
Apr 27, 2009
85
0
6
Texas
Oct 26, 2009
#2
  • Oct 26, 2009
  • #2
Its a seal that is worn and leaking. I have the same problem. In my case, its a very slow leak so Im not worrying about it right now.
 

KBExperience

Active Member
Jun 21, 2009
466
1
49
Houston
Oct 26, 2009
#3
  • Oct 26, 2009
  • #3
VEE EIGHT said:
Its a seal that is worn and leaking. I have the same problem. In my case, its a very slow leak so Im not worrying about it right now.
Click to expand...

yeah, this ones a slow leak too.. i checked the fluid level and its still full
 

trinity_gt

10 Year Member
Jan 31, 2003
3,125
81
99
Canada
Oct 26, 2009
#4
  • Oct 26, 2009
  • #4
KBExp, your mods list doesn't show it but I'll ask anyway: Does the car have 4.10s in the back?
 

KBExperience

Active Member
Jun 21, 2009
466
1
49
Houston
Oct 26, 2009
#5
  • Oct 26, 2009
  • #5
It's got 3.73's
 

trinity_gt

10 Year Member
Jan 31, 2003
3,125
81
99
Canada
Oct 26, 2009
#6
  • Oct 26, 2009
  • #6
KBExperience said:
It's got 3.73's
Click to expand...

Just throwing this out there: With shorter gears in the rear and a stock driveshaft, you may experience driveshaft vibration at high speeds that can actually beat the tailshaft bushing in the trans to hell. This can lead to a sloppy yoke fit and a seal leak.

Be sure to check the state of the bushing when looking at the seal or else the leak may persist or return.
 

CobraRed_96_GT

Active Member
May 20, 2006
1,421
4
39
UCSD/La Jolla
Oct 26, 2009
#7
  • Oct 26, 2009
  • #7
It's probably because you have the 40r70w model and not the 4r70w like everyone else
 

KBExperience

Active Member
Jun 21, 2009
466
1
49
Houston
Oct 26, 2009
#8
  • Oct 26, 2009
  • #8
LMAO cobra.. I had it installed in Chinatown.. He said it was a super beefed up version Lol. JK but yeah lol
 

ErikTheBeast

Member
Apr 12, 2006
124
0
16
Kansas City MO
Oct 26, 2009
#9
  • Oct 26, 2009
  • #9
trinity_gt said:
Just throwing this out there: With shorter gears in the rear and a stock driveshaft, you may experience driveshaft vibration at high speeds that can actually beat the tailshaft bushing in the trans to hell. This can lead to a sloppy yoke fit and a seal leak.

Be sure to check the state of the bushing when looking at the seal or else the leak may persist or return.
Click to expand...

That or destroy the tailshaft housing like mine did. Have you gone 120 or over lately ? Guess the 4r70w's are bad about trashing them above 120.
 

Blackone51

Member
Oct 30, 2008
201
2
16
Oct 26, 2009
#10
  • Oct 26, 2009
  • #10
Mine was covered in fluid a little while back and my leak turned out to be a the pan gasket. Replaced with a new one and no more fluid all over the place, might want to start with the easy stuff first. I have the problem where I always think the worst right away, usually not that bad.
 

CobraRed_96_GT

Active Member
May 20, 2006
1,421
4
39
UCSD/La Jolla
Oct 27, 2009
#11
  • Oct 27, 2009
  • #11
KBExperience said:
LMAO cobra.. I had it installed in Chinatown.. He said it was a super beefed up version Lol. JK but yeah lol
Click to expand...
Lol, by ford terminology - it'd be a 40 speed
 

KBExperience

Active Member
Jun 21, 2009
466
1
49
Houston
Oct 27, 2009
#12
  • Oct 27, 2009
  • #12
Yeah man, my car will do 900 mph!
 
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