Transmission (automatic) fluid and filter change, 2.3L, 5 speed - Mazda3 Forums : The #1 Mazda 3 Forum


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Old 11-27-2010, 11:22 PM   #1
jwalters
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Default Transmission (automatic) fluid and filter change, 2.3L, 5 speed

Can anyone help with a how-to on changing the automatic transmission fluid and filter on a Mazda 3, 2.3L, 5 speed?

I found a how-to for the 2.0L manual trans, but couldn't seem to find one for the 2.3L, auto.

The local transmission repair shop wants $600!!

Thanks in advance for any suggestions!
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Old 11-28-2010, 02:57 AM   #2
monster j
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Default Re: Transmission (automatic) fluid and filter change, 2.3L, 5 speed

If you only drain the auto fluid from the buttom, you only get rid of around 50% of the fluid and another 50% of the old fluid are still trapped in your torque converter and various pumps and such, that's why autoshop charge you money to use specialized machine to "flush" out all the fluid.

You can also do it yourself, here is a link which I think should help:

http://auto.howstuffworks.com/under-...sion-fluid.htm

But like the article mentioned, this will only result in a "partial" fluid change

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Old 11-28-2010, 06:15 PM   #3
DrWebster
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Default Re: Transmission (automatic) fluid and filter change, 2.3L, 5 speed

This would be the walkthrough you're looking for:

http://www.mazda3forums.com/index.php?topic=66369.0

The ATX holds about 9 quarts of fluid, 3 of which are in the pan. The walkthrough shows you how you can flush out 3 quarts at a time and get all new fluid in there. Don't worry about replacing the transmission fluid filter.
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Old 11-28-2010, 09:41 PM   #4
jwalters
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Default Re: Transmission (automatic) fluid and filter change, 2.3L, 5 speed

Many thanks Monster J and Dr Webster !!

Exactly what I was looking for.

I just bought this Mazda 3 and really glad I found this forum.
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Old 11-30-2010, 10:38 AM   #5
adumbrille
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Default Re: Transmission (automatic) fluid and filter change, 2.3L, 5 speed

$600 bucks? The dealer charges $275.
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Old 01-19-2011, 04:26 AM   #6
ndrewoods
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Default Re: Transmission (automatic) fluid and filter change, 2.3L, 5 speed

Here is a DIY for automatic transmission filter and fluid replacement. Hope it helps cause I got a bit dizzy when I read that before.

http://www.partshp.com/FluidChange.htm
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Old 01-19-2011, 06:27 PM   #7
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Default Re: Transmission (automatic) fluid and filter change, 2.3L, 5 speed

I did mine using the walkthrough about a year ago and tried to get as much of the old fluid out as possible. I'd estimate that I probably got out half or only a little more, I checked the fluid color after changing and it was not quite as dark but still much darker than new fluid. I plan to do it again sometime soon.

The tranny sure didn't like the "pumping out" process desribed in the walkthrough though, when you shift through the gears. I remember it making buzzing noises (probably the pump for the fluid) and other strange noises too, it was somewhat scary and didn't get hardly much more fluid out. Anyone else that did this method, please chime in.
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Old 01-19-2011, 07:22 PM   #8
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Default Re: Transmission (automatic) fluid and filter change, 2.3L, 5 speed

I followed HouRman's method (the one I linked to above) and was able to get perfectly red fluid in the end. You have to pump/drain out and refill the pan a total of 3 times to replace all of the fluid. I didn't bother shifting through the gears while pumping the old fluid out as it only takes a few seconds to pump 3 quarts out. I've done the process twice so far and it's worked fine for me.
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Old 01-21-2011, 05:36 PM   #9
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Default Re: Transmission (automatic) fluid and filter change, 2.3L, 5 speed

[quote author=DrWebster link=topic=182891.msg3911632#msg3911632 date=1295482927]
I followed HouRman's method (the one I linked to above) and was able to get perfectly red fluid in the end. You have to pump/drain out and refill the pan a total of 3 times to replace all of the fluid. I didn't bother shifting through the gears while pumping the old fluid out as it only takes a few seconds to pump 3 quarts out. I've done the process twice so far and it's worked fine for me.
[/quote]

Did you drop the pan when you did this? i have another 8 qt of tranny fluid in the garage so when it warms up a bit more I'll be doing this again. I think I only did 2 cycles of pumping the fluid out and shifted thru the gears. This time I need to follow that walthrough to a T and just let it pump 3 qts fluid out at a time while just in Drive.
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