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Trans Fluid Out Vent

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Old Aug 3, 2008 | 11:20 AM
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Default Trans Fluid Out Vent

Why all of a sudden Am I getting fluid out the vent of my o2/A4 ? Had the fluid changed 3 months ago with no problems, just started this BS now????
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Old Aug 3, 2008 | 11:23 AM
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have an 02 myself, and about to change the a4 fluid/filter
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Old Aug 3, 2008 | 08:09 PM
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Probably an over full situation. If you didn't bring it to a dealer or shop that knows how to change fluid on these cars, chances are they overfilled it. Filling it is a condition of trans fluid heat and running the trans thur the gears. An overfull condition will normally show itself during a high heat/extreme usage situation when the fluid will vent out of the overflow and show up on the rear of the car just over center on the right.. If its leaking elsewhere, you may have a different problem.
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Old Aug 3, 2008 | 08:21 PM
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As far as I can see it's coming from the vent, to the right as you said. Just seems odd that it started after 3 months! Trans temp is around 185f That checkvalve on the vent line does that have anything to do with it???.......Pat
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Old Aug 3, 2008 | 08:38 PM
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Originally Posted by C5Pat
As far as I can see it's coming from the vent, to the right as you said. Just seems odd that it started after 3 months! Trans temp is around 185f That checkvalve on the vent line does that have anything to do with it???.......Pat
Was anyone driving it extremely hard, like a son?

Its just that, a check valve. Its designed to let fluid out but not the air in as that contaminates trans fluid, which is nothing more that a type of hydraulic fluid. If you have a manual, check the fluid level or do a search to see the correct parameters to check the fluid.

Mike V
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Old Aug 3, 2008 | 08:56 PM
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Originally Posted by MikeV
Was anyone driving it extremely hard, like a son?

Its just that, a check valve. Its designed to let fluid out but not the air in as that contaminates trans fluid, which is nothing more that a type of hydraulic fluid. If you have a manual, check the fluid level or do a search to see the correct parameters to check the fluid.

Mike V
Thanks Mike.... No one drives it but me! I have a manual, just have to get it up in the air to check it. As I said it's not running hot and shifts good, Went on a 600 Mi. trip and noticed this when I got home, maybe got a little hotter then usual???
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