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post #1 of 14 (permalink) Old 11-29-2010, 02:22 PM Thread Starter
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leak - what is this?

Hello all, first post, great site...Sorry for not searching as i have no idea what i am even looking at...Have a leak coming from below the overflow tank, a tube that looks like it goes directly into the top of the wheel well (right side)...the picture below is from a hemi GC but its all i could find online that matches what i am looking at...Commander in question is an 08 4.7 flex fuel 4x4 50k miles...if this seems to be a no brainer i am sorry and am greatful for any direction...Thanks!
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post #2 of 14 (permalink) Old 11-29-2010, 02:39 PM
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The tube thats circled in the pic is the front differential breather tube. It attaches to one of the studs of the front strut. Is it leaking at the end of that breather tube?




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post #3 of 14 (permalink) Old 11-29-2010, 02:55 PM
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Have you tried following the tube to its end and see what it connects too?

What does the fluid, that is leaking, appear to be? Water, Coolant, Red Oil, Black/Brown Oil, etc.?
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post #4 of 14 (permalink) Old 11-29-2010, 03:00 PM Thread Starter
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Wow...I feel so much better just knowing what it is called now...I can post actual pictures and a better description tonight (currently at work)...But it does seem to be leaking from the round thing where it connects to a tube heading down in between the wheel well and engine...note: the tube and circle thing are easily moved (not sure if normal)...leaks enough to leave a quarter size "puddle" behind the right tire.
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post #5 of 14 (permalink) Old 11-29-2010, 03:09 PM
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Quote:
Originally Posted by Mongo View Post
Have you tried following the tube to its end and see what it connects too?

What does the fluid, that is leaking, appear to be? Water, Coolant, Red Oil, Black/Brown Oil, etc.?
As 07JeepXK said, it is the diff breather tube. So that would mean it connects to the front diff.

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post #6 of 14 (permalink) Old 11-29-2010, 03:12 PM Thread Starter
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Quote:
Originally Posted by Mongo View Post
Have you tried following the tube to its end and see what it connects too?

What does the fluid, that is leaking, appear to be? Water, Coolant, Red Oil, Black/Brown Oil, etc.?
Going to follow it down tonight...the fluid does seem to be a oily redish color...I am limited in my mechanical ability having only worked on my XJ (which seems less complicated and I always have a haynes/chilton)I have found with each repair I learn quite a bit...and now I get to start learning about the commander!
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post #7 of 14 (permalink) Old 11-29-2010, 03:15 PM
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Quote:
Originally Posted by jeep5253 View Post
As 07JeepXK said, it is the diff breather tube. So that would mean it connects to the front diff.
I think it would be smart for him to confirm it, by tracing the tube down to its source.

It doesn't sound like he has serviced the front axle anytime recently, and it makes me wonder what would cause oil to come up that breather tube and start to leak.

Could be a bad valve on the end of it, maybe water got into the front axle and now its fluid level is high?

Done any 4 wheeling lately, driving through water, or parked driven at high angles?

Trans fluid is oil with a different additives package and dyed red to make it easier to identify. Trans cooler liners are in that area, look closely, its possible fluid dripped or sprayed from the real leak onto that tube and its fooling you. Trans fluid in good shape is a pretty bright red, it can darken and loose the bright red as it gets older and worn out.

OEM axle fluid is brown/honey in color, but it might appear a bit red, some other axle fluids are red as well, its always possible the axle fluid was changed sometime ealier with a red colored axle fluid.

Last edited by Mongo; 11-29-2010 at 03:21 PM.
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post #8 of 14 (permalink) Old 11-29-2010, 03:25 PM
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I think it would be smart for him to confirm it, by tracing the tube down to its source.
He can do that if he wants to but there is really no need as we have told him what it is. Obviously you don't believe us.

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post #9 of 14 (permalink) Old 11-29-2010, 03:32 PM Thread Starter
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No real off roading...hasn't been through any water since the
beginning of October (live in PHX and she still looks like a golf ball from the hail), I park on an incline but not too badI joked with my wife to see if she hit something as the leak appeared after her driving it

I read alot of those posts about the trans lines thinking that would be it but all those seem to be in really good shape (spotless)
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post #10 of 14 (permalink) Old 11-29-2010, 04:19 PM
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Quote:
Originally Posted by jeep5253 View Post
He can do that if he wants to but there is really no need as we have told him what it is. Obviously you don't believe us.
I believe all of you, but I'm also aware of the limited experience of the poster and just a small picture using another vehicle, no less, as an example leaves a lot that can be lost in translation, better safe than sorry by actually confirming it by going to all the trouble of stooping over and looking underneath the vehicle to trace the line to its source.

Quote:
Originally Posted by gsned
No real off roading...hasn't been through any water since the
beginning of October (live in PHX and she still looks like a golf ball from the hail), I park on an incline but not too badI joked with my wife to see if she hit something as the leak appeared after her driving it

I read alot of those posts about the trans lines thinking that would be it but all those seem to be in really good shape (spotless)
Unlike other lines, that tube only carries air in and out of the axle to allow it to vent pressure and keep pressure equalize in the axle. NO oil should be coming up out of the tube, BUT its always possible some oil just got burped up out of the tube and its a one time deal.

I'd clean up the leaked fluid, check the fluid level in the axle and just keep an eye on it and see if its happens again. If it happens to often, I'd suspect something is wrong.
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