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Is overfilling an automatic tranny bad ???

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Old 08-17-2008, 01:21 PM
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Default Is overfilling an automatic tranny bad ???

Not even 5mm from the full mark on the dipstick .
Old 08-17-2008, 05:00 PM
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Default Re: Is overfilling an automatic tranny bad ??? (wangan)

Yes it is because it wont be able to build up the correct amount of pressure and will cause pump failure.
Old 08-18-2008, 11:56 AM
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Default Re: Is overfilling an automatic tranny bad ??? (CivicxTree754)

I thought there was no pump in a automatic tranny !
Old 08-18-2008, 02:49 PM
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Default Re: Is overfilling an automatic tranny bad ??? (wangan)

Yes....that is what supplies the working pressure to shift the gears inside the trans. Hence the term "automatic". And yes, overfilling is bad. Poor drainback, excessive foaming, etc.
Old 08-19-2008, 07:57 AM
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Default Re: Is overfilling an automatic tranny bad ??? (King V)

YUP
Old 08-21-2008, 04:34 AM
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Default Re: Is overfilling an automatic tranny bad ??? (srmofo)

Honda tech told me it won't do anything cause theres to little plus there's a breather cap if anything happens !
Old 08-21-2008, 10:00 AM
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Default Re: Is overfilling an automatic tranny bad ??? (wangan)

Why not just be safe and drain a little bit?
Old 08-21-2008, 11:52 AM
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Default Re: Is overfilling an automatic tranny bad ??? (02 accord)

I drained it a little bit now I'm a little bit under the Max line !
Old 08-21-2008, 12:14 PM
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Default Re: Is overfilling an automatic tranny bad ??? (wangan)

ya, honda put a full mark on there for a reason.... chances are it won't hurt anything, but it takes less than 5 minutes to drain it
Old 08-21-2008, 03:55 PM
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Default Re: Is overfilling an automatic tranny bad ??? (srmofo)

It will not cause pump failure, lack of oil does that.

If it is significantly overfilled, it may foam up, and come out of the breather oil. If that is clogged, it will most likely spit out the axle seals.

It will not cause the unit to fail.

Read this and learn a little bit:

https://honda-tech.com/zerothread?id=2086594
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