Does the E4OD have a breather? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 02-20-2000, 07:15 PM Thread Starter
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Does the E4OD have a breather?

I've just run breather lines from the front and rear diffs and back of the transfer case to the engine compartment, but I do not see one on the transmission. Is there one? Also, the original line on the transfer case had a cap on it...does it need that or will an open line work? Thanks.

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post #2 of (permalink) Old 02-21-2000, 01:14 AM
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Re: Does the E4OD have a breather?

The breather for the E4OD tranny is a small mushroom type cap (which allows breathing) on the top of the tranny. It is crimped on, so adding a hose to it woould mean cutting this cap off and trying to take the plug out and adding a fitting for a hose to attach. Although, you can get better access to it by taking the carpet up in front of the seats, and you will find an access plate that can be removed for access to the top of the tranny.

The plate is most likely where the cover for a shift/4x4 manual shift would go. But all the same it gives access to the top of the tranny.

post #3 of (permalink) Old 02-22-2000, 04:10 AM
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Re: Does the E4OD have a breather?

It's better to not leave the ends of your breather tubes open. I think the Ford dealership will sell the "breathers" which are really nothing more than glorified plastic caps sort of baffled to keep out contaminants.
I just extended my diff tubes as well and went to the GM dealer (sorry!), they sell actual breathers for 4.40/apiece. I asked at local Checker and Autozone and got nothing but a blank stare or a crankcase or valve cover breather.

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