Oil comes out of breather on top of tranny

80

Asked by jerry1938__99 Nov 30, 2016 at 10:01 PM about the 2003 Mercedes-Benz E-Class E 500

Question type: Maintenance & Repair

2003 E500,  150 k miles. Had antifreeze in tranny. Replaced radiator and rebuilt the tranny. No leaking when not moving but when in gear fluid comes out of the top of the transmission at the breather. Shifts OK.

7 Answers

80

Well it didn't have too much fluid in it and it kept doing it till there wasn't enough in it to show on my dipstick. The lines are all in good shape with no kinks. I did hydraulic repair in the Air Force a few years back. It was driven very gently so it wasn't over heated. I can get it to leak if it is up on my hoist and a helper is in the car giving it a little gas. There is a new contact plate in it so there is a new float valve with it. The car is a 2003. Jerry

1 people found this helpful.
80

The transmission is a 722.6. No baffles inside any of those I have done. I filled it up to the proper level using the Mercedes dipstick and when I started it up it blew some oil out of the dipstick tube. Cap wasn't on it at that time. I never had oil come out of that tube before on any of them I have worked on. I put the cap on and ran it for less than a minute and had a mirror where I could see the vent and it started bubbling oil out the breather vent.

2 people found this helpful.
80

I think there must be a hot spot in there that is boiling the fluid and creating a vapor. It may be too much pressure on a thrust bearing. I am thinking strongly about pulling it down and checking all those bearings and look for signs of over heating.

1 people found this helpful.
80

All OK now. Turned out it was the torque converter. It must have been full of trash as I cut open the last filter I had put in it and it was full of junk. It had only about 20 miles on it. I knew the tranny was clean so that left the converter. No more oil flying out the breather. Thanks for the suggestions. Jerry

3 people found this helpful.
80

It had new oil about three or four times but I think it was the rust coming lose from the converter. Jerry

80

Well have put a couple hundred miles on it and no problems so looks like the converter was the problem. Keeping my fingers crossed,:))) Thanks for the help. Jerry

Your Answer:

E-Class

Looking for a Used E-Class in your area?

CarGurus has 10,653 nationwide E-Class listings starting at $1,200.

ZIP:

Own this car?

Share your experience with others.

2003 Mercedes-Benz E-Class

Review another car

CarGurus Experts

  • #1
    Soranbook
    Reputation
    3,040
  • #2
    dandyoun
    Reputation
    2,990
  • #3
    bobkat
    Reputation
    2,960
View All

Know more, shop wisely

Search

Related Models For Sale

Used Mercedes-Benz C-Class
897 Great Deals out of 15,956 listings starting at $1,100
Used Mercedes-Benz S-Class
285 Great Deals out of 7,165 listings starting at $2,499
Used BMW 5 Series
711 Great Deals out of 10,830 listings starting at $1,399
Used BMW 3 Series
1,022 Great Deals out of 13,263 listings starting at $955
Used BMW M5
46 Great Deals out of 583 listings starting at $13,995
Used BMW M3
63 Great Deals out of 1,154 listings starting at $10,900
Used BMW 7 Series
206 Great Deals out of 4,076 listings starting at $2,700

Used Cars for Sale

2023 Mercedes-Benz E-Class For Sale
77 Great Deals out of 2,289 listings starting at $46,000
2022 Mercedes-Benz E-Class For Sale
30 Great Deals out of 256 listings starting at $34,887
2021 Mercedes-Benz E-Class For Sale
70 Great Deals out of 712 listings starting at $29,988
2020 Mercedes-Benz E-Class For Sale
73 Great Deals out of 670 listings starting at $19,952
2019 Mercedes-Benz E-Class For Sale
42 Great Deals out of 540 listings starting at $17,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.