: breather question

03-17-2008, 10:01 PM
I extended the rear diff breather into the tail-light area.

I found 2 breathers on the left front fenderwell. What do they go to? I get conflicting information from forum searches.

There are 3 more things that need breathers:

1) front diff (pretty sure this one is on the fenderwell.)
2) transmission
3) transfer case

Which ones are on the firewall?
Which one do I need to hunt down? :confused:

03-17-2008, 10:11 PM
I thought the transmission and transfercase just had breathers on top of them, but they may have routed these to the firewal..

Denver Dave
03-17-2008, 10:52 PM
The transmission and tcase vent through the top. There is a thread somewhere around here where a guy sealed them up and put in some breathers. If you are interested I think I have the thread bookmarked at work. I know for sure one of the fenderwell breathers is for the front diff but I never really gave the other one much thought.

Denver Dave
03-17-2008, 11:00 PM
So you got me curious - apparently the other one is the electric actuator breather.


03-18-2008, 07:52 AM
Now I'm still a little confused.

01-04 tcase assy drawing (http://www.ncttora.com/fsm/2003/Repair_Manual/03tacoma/tr/traass/comp.pdf)

This shows a breather tube coming off the tcase shifter assembly on 01-04. Does not say where it goes...

Dave, I would like that thread, especially if it shows pics.

Denver Dave
03-18-2008, 10:48 AM
I knew I saw it somewhere - not TTORA but helpful nonetheless: http://www.4crawler.com/4x4/CheapTricks/WaterProofing.shtml#GearBoxVents

Now I'm confused too - I see the breather hose in your diagrams but I don't remember seeing them the last time I was in there. I know one of the fenderwell breathers is for the front diff FOR SURE because my mechanic overfilled it last time and it blew out that valve along with the driveshaft seal. Now every time I go up the driveway to the cabin in 4-lo I have to top off the front diff :mad: Another fix for another day.

Anyways, when I get home tonight I'll check it out.

Another thread to look at for the transmission breather is http://tacomaterritory.com/forum/showthread.php?t=96387&highlight=transmission+breather

Another great picture further down the thread http://tacomaterritory.com/forum/showthread.php?t=96164&highlight=transfer+breather

03-19-2008, 08:47 PM
If you are that serious about water crossings you need to remove the carpet from the cab... :b

wet carpet does more damage to your truck that anything you are extending the breather from and the heat exchange lose from the extension reducing air flow probably reduces the life of moving parts more than moisture!

just time all your wet excursions just before you need to swap fluids!

if you get water in the t-case and tranny you are more that likely ruining your ECU wiring and sensors before you get a chance to see gear and shaft damage

03-19-2008, 09:36 PM
I tried hard to buy my truck with only a vinyl floormat, but I could not get one.

If the carpert gets wet I will rip it out and never look back. Does anyone sell a plain vinyl replacement?

I don't intend to get into deep water, but stuff happens. I have been on ranches in Texas where we had to camp 2 days waiting for the water to go down. That water was moving so fast you could hear the boulders cracking and rumbling, and I would have never tried it. But the point is that sometimes water is deeper coming out than going in...

03-19-2008, 11:05 PM
If the carpert gets wet I will rip it out and never look back. Does anyone sell a plain vinyl replacement?

Yeah, it's an FJ Cruiser :D

Denver Dave
03-21-2008, 12:39 AM
I had a chance to take a peek tonight. The breathers are right on top of the t-case/tranny. You might be able to get a fitting on the t-case breather port but your gonna have a hell of a time finding a way to get tubing from the transmission breather. It is recessed amongst some aluminum fins. A straight fitting *might* work but you risk messing with your shifting.

03-21-2008, 07:48 AM
Thanks, Dave.

Nothing like a definitive answer!