2007 Mazda 3 transmission fluid and filter change | Hard shifting problems in 2020 (13 year old car)

[@danpettis1675]

top tip: use silicone grease on a rubber gasket. that way it stays put and you can have your holes line up

[@sargecollects]

Thanks for the tip.

[@subarux4054]

Do you have any recommendations in regards to silicone grease?

[@sargecollects]

@@subarux4054 I don’t have any recommendation. Hopefully Dan does.

[@danpettis1675]

@@subarux4054 far as brands go. I use SIL GLYDE you can find it almost anywhere. Walmart, auto zone, etc

[@Avaddon911]

@@subarux4054 I use gasket sealer myself, just a few dots here and there to press your gasket into and hold it in place.

[@Skammee]

Not an expert here , have read that automatic transmissions that have not had the fluid changed for a long time and likely worn internal parts get used to a certain viscosity and changing it too much in one direction can lead to shifting problems or even the end of a transmission prematurely. Some guys only drain about 2 quarts through the drain plug and then replace that much to the full level - less of a shock to the internals. One old mechanic said replace the tranny fluid and filter every 2nd or 3rd oil change and not stomping on the accelerator will make the tranny last longer .

[@RealRosieRuiz]

That loose part that plugs (loosely) into your filter is a heat sensor.

[@sargecollects]

Sweet. Thank you for that info. Love learning how to fix cars. I want to be better at it.

[@eugm]

I just did a transmission pan, filter, and fluid change on my Mazda 3. Tip - there is a reverse plug on the pan you can remove to drain the fluid before removing the pan, less mess. I used Valvoline MaxLife ATF, around 5 quarts.

[@smyrnianlink]

For those that want to use a synthetic ATF instead of Mazda MV : Compared to Mazda MV : Motul Multi ATF is just a little too thick, Mobil 1 Synthetic ATF and Eneos Eco ATF are both just a little too thin. (Mobil 1 is also a little too expensive) But they are very very close .. so in fact they all work! I mix 2 liters motul with 1 litre of Eneos, so as to get closer to the original viscosity. (premix them to prevent foaming) Thick ATF is better for smoother shifting. Thin ATF is better for performance These three have almost the same viscosity when cold. Motul retains a little more viscosity when hot. The other two can not .. MV curve remains in the middle..

[@eugm]

I used Valvoline MaxLife ATF - works well.

[@davidchavez3510]

Seen you issues with your shifting. Check your Transmission speed control sensor. 100% Its going to be the TCM. . I bought a brand new from the stealership $700 there not cheap.

[@sargecollects]

Yeah the stealershio was going to cost me more than that I think. I even looked at several junkyards and most of all the “computer” stuff out of these cars already taken out.

[@karimsadouni4758]

Change oil .after need good obd2 scanner

[@Avaddon911]

I've found if you pry the pan from a corner it comes loose a little easier.

[@sargecollects]

Awesome thanks

[@annacalise8336]

Plus it's a little less likely to bend at the corner

[@davidchavez3510]

Anyone have a link where I can buy the Transmission Kit also I'm trying to go synthetic. 2006 Mazda 2.3 4 door hatchback..

[@sargecollects]

Sorry I don’t. Hopefully other people who commented can help.

[@dizzydreamer5171]

I just recently changed my tcm but I did not put it back where it goes under the battery box I zip tied it to the back of the fire wall. Because that’s why they go out because of overheating and then it fry’s the tcm.

[@sargecollects]

Yes I did the same.

[@elavation7890]

I have a 2005 mazda 3 question does these models have tcm I've looked even removed the battery and tray looked under can't see it might have to look in deeper under the area it's suppost to be located at

[@uhmeizuhngralphf0549]

Did changing the fluid fix your shifting issue

[@sargecollects]

No not really but it was time to change it out anyways. So I did.

[@Shadow-to6vd]

Get the TCM Rebuilt, that’s most likely the reason

[@sargecollects]

Yes it’s been rebuikt and fixed

[@jamescrockett5938]

Just got my tcm for $240. Shit works great now...

[@GMN520]

Where did you buy your from Im having trouble searching for one

[@Cornbreadfed420]

Same problem with my 2004 mazda 3 AT light comes on then jerks changing gears. Don't think it my tcm because it's not located on the Trans.. did you figure out your problem with it?

[@sargecollects]

Yes, it’s all good now. So glad I was able to do this.

[@Cornbreadfed420]

@@sargecollects what fixed yours?

[@sargecollects]

@@Cornbreadfed420 I had to get another TCM from upfix.com. Fixed the whole problem. Still driving right now with no issues.

[@tharris9629]

Did you have to change the transmission fluid and tcm for the AT light to come off?

[@sargecollects]

Well, the only time the AT light came on is when the car would jerk when changing gears. Other than that....it was fine and didn’t come on constantly.

[@davidchavez3510]

Witch Synthetic fuild should I get ?

[@jamescrockett5938]

Tcm

[@garciasolution6534]

Thanks 🙏

[@BAOFxDefect]

does this same issue w the tcm still happen with the 2011 mazda 3?

[@sargecollects]

I can’t answer that since I don’t know the specs with 2011

[@oiliranmarket1526]

Hello dear friend, can I ask why you don't change the gearbox oil with the device?

[@sarinsarin7898]

The gearbox is the transmission.

[@uhmeizuhngralphf0549]

What engine size you have is it the same transmission for all Mazda 3 from 2004 to 2009

[@sargecollects]

I have 2.3L

[@rudyarias4102]

Hi. How many courts does it take?

[@sargecollects]

@@rudyarias4102 I think I used 4 quarts.

[@rudyarias4102]

@@sargecollects i also have a 2.3L. Someone told me six but found that too much

[@rudyarias4102]

@@sargecollects haha i spelled quarts wrong😂

[@growenywhere5346]

Hello. How much new transmission oil had to be poured?

[@sargecollects]

I don’t quite remember but I think I used 4 quarts. I did check to see the level to not over fill.

[@growenywhere5346]

@@sargecollects Thank you so much ❤️

[@johnwright9287]

That's a transmission filter sensor

[@maritimezhang]

best way to remove the pan is to use a dead blow hammer and hit it from the side

[@sargecollects]

Awesome. Thank you.

[@johnwright9287]

That's a Transmission Sensor

[@srisdigitalcreation8845]

ATF capacity?