NC Miata Auto Transmission Service

[@arightpest3367]

Hi everyone I drive the automatic mx5 and it goes around corners just as well as the manual I drive the automatic due to an accident at work and my left leg no longer works like it should. I have had many automatics over the years and the mx5 box’s work spot on and been very happy with the way it works. My previous car was a Porsche 2.7 tiptronic and I find the mx5 just as much fun as that car with the added advantage of cheaper service costs and more reliable. Don’t knock the automatic until you have tried it. Mines just turned 40.000 miles and it’s a 2011 so I think it’s maybe due at 50.000 that’s another three years for me lol.

[@DaveSimkus]

I have a 2017 automatic MX-5 and I agree with you, the modern automatic is actually really good. It shifts fast and there is less delay in sound which makes it sound better than a manual when shifting, in my opinion. The NC Miata is nice but if you ever get a chance, try the ND.

[@mauricesoulis1590]

Xlnt! 13’ prht Bay Area owner in copper red with 43k- 2nd owner a/t- I do miss the clutch but man traffic & 65 in November? I’d buy a new one np but theft is always an issue here- No like the new hard top offering tho nothing like them. I’ve owned 4

[@nghiadinh94]

I couldn’t find many videos for miata auto, thanks so much for it!

[@knowgearsknowglory2862]

I certainly hope it help, you're welcome!

[@RbNetEngr]

Nice video covering the procedure. A few things: - You didnt torque the pan bolts to a torque level with a torque wrench? - Regarding fluid temps when checking fluid level, I did a fluid procedure on my ZF transmission (BMW) and used my OBDII scanner to tell me the fluid temperature so I knew I was checking the level at the correct temperature. I would think that the MX5 should also provide this fluid temperature via an OBDII scanner.

[@ADUSN]

Really helpful video even for ND owners. Good work

[@ogre706]

Amazingly detailed video, thank you for sharing. My 08 MX5 has just about 120,000 miles... probably time to due a fluid change. 😅

[@knowgearsknowglory2862]

I hope this helps if you attempt it!

[@luisarmandoorenos9774]

Good job! Bro. Thanks for explanation.

[@SlimWhittman]

Pretty good video. I own a 2008 auto PRHT with 50k miles. The trans has never been serviced and the pump whines pretty loud. I'm going to do the service following your example and hope for the best. It is encouraging to see one of these with such high miles. Hopefully this car will last for a while. I am not a young man. This is probably the last car I will ever buy so I need it to be reliable.

[@knowgearsknowglory2862]

I hope it goes well for you! Im glad to hear you found this helpful

[@fabiogervasoni_music]

Great way to raise the car on 4 ramps! have to do some work on my car (Mercedes SLK r171) and was thinking of doing ramps at the back and axle stands at the front but I think the 4 ramps solution using the jack on the front is way better!

[@MrBammbalamm]

Yeah, I've had shops want to charge 4 grand for this. Mine is in the garage on jack stands and has been there for years now. How much would you charge....lol Im in Mesa

[@knowgearsknowglory2862]

oh man i would love to help you but I'm knee deep in painting the doors of the miata!

[@papabear007]

Thanks I took it to the dealer and it was the fill plug seal they said it would splash over and it was leaking from that 130 dollars no more transmission leak

[@knowgearsknowglory2862]

Great to hear!

[@symph6095]

Thank you for the video. Do you happen to have the part numbers for the oil ring, pan gasket, and filter?

[@ilovekuma]

I think i drained all of the fluid out, but i only filled another 3 quarts. Now removing the check bolt drains soo much fluid?? Did i do something wrong 😢

[@knowgearsknowglory2862]

did you get the car to operating temp? once the transmission is war it starts circulation of the fluid.

[@ilovekuma]

⁠@@knowgearsknowglory2862yeah it's been warmed up, i just drained all of the fluid from the check and pumped in more, going to turn the engine back on and go through the gears again. will probably just test drive now.. used 3.5 bottles

[@seans_shed]

I’m just doing this job and I’ve put everything together I’ve bought 5 litres of 3309, how many litres does it take as I cannot find this info???

[@knowgearsknowglory2862]

mine took around 6

[@wadesouza6402]

2011 NC PRHT Auto trans. Dumb question. Car just turned 22K miles as I dont drive much and live on an island so no place to go. Anyway, since buying I have changed oil, tires, struts due to a huge hole in the road. It suddenly hit me one day that while the miles were low I had exceeded the months element on my owners manual. Car drives well but I am wondering should change the AT fluid? Does it break down just due to time? Also, what other things would you suggest I do just for "insurance". Not realy a DIY guy. I have read the cooling system can have issues. My coolant tank looks a little yellow so I figure I will just replace that as well as the coolant. My AC is running but seems to be much less cool than it was initially. Likely low gas/coolant? I like this car and after a few years of health issues want to start to use it consistently again. Appreciate any input. Aloha.

[@nickinge617]

Thanks for the video. Subscribed. I know on the NB, three of the bolts that hold the filter on go through the control valve, two thread into the transmission body and the third has a nut on top of it that can fall off. Is that the case with the NC/ND filter bolts as well? Or did Mazda fix this absurd design flaw with the SJ6A-EL transmission?

[@knowgearsknowglory2862]

Similarly a couple bolts go through the valve body but I don't think the rest apply.Maybe they learned?

[@nickinge617]

@@knowgearsknowglory2862 Thanks a million!

[@papabear007]

Hi question yes yesterday I noticed couple of spots of transmission fluid on the floor. I cleaned the floor put the car out side for about 2 hrs put cardboard on the floor ln the garage and put the car back in the garage looked under the car don’t see anything wet and no fluid on the cardboard. Sucks I’ll go to Mazda today to check the fluid how do you check it or is there an indication light something tells you that you have transmission warning it’s crazy thanks

[@reverse_aid0744]

Is 40k miles too late to change the transmission fluid in my 2010 NC MX-5 Grand Touring with an automatic transmission? I heard people say not to do it. I see you have a lot of miles. How did it hold up after the change?

[@charley420]

40k is not too late at all. Go for it

[@papabear007]

Hi question yes yesterday I noticed couple of spots of transmission fluid on the floor. I cleaned the floor put the car out side for about 2 hrs put cardboard on the floor ln the garage and put the car back in the garage looked under the car don’t see anything wet and no fluid on the cardboard. Sucks I’ll go to Mazda today to check the fluid how do you check it or is there an indication light something tells you that you have transmission warning it’s crazy thanks You mentioned the check to see if it’s full how won’t it come out if you pull the plug? And if I put jack under car won’t it give false reading?

[@knowgearsknowglory2862]

the only way i know to check the fluid level is to pull the plug when at running temp and try to add fluid. if it runs out immediately its full.

[@DaveSimkus]

Dude, you made the best video for this job on KZbin! I like that you also showed any mistakes or problems along the way. I have a 2017 ND Automatic Miata. Do you know if the NC and ND use the same transmission?

[@knowgearsknowglory2862]

thank you for that great compliment! My understanding it the transmissions between the generations are different. I don't have knowledge of how different they are.

[@ADUSN]

Same case, different torque converter. Otherwise the fluid is the same, and maintenance should be approached in the same way

[@DaveSimkus]

@ADUSN Thanks. Just finished mine. I did a lot of research and found that Idemitsu Type TLS synthetic fluid is the absolute best. Also, there is a line pressure valve adjustment on the valve body that can be adjusted to a higher setting with just a flathead screwdriver and without taking the valve body out. I adjusted mine and can feel about a 10%-15% improvement in shifting firmness. If you drop the pan, there is no reason not to adjust this setting. Next step would be a shift kit but that could make it too harsh for normal driving.

[@ADUSN]

@@DaveSimkus Good Info, we've discussed this on the Miata forums but nice to hear from someone who did the work on an ND 👍

[@knowgearsknowglory2862]

@@DaveSimkus Great info thank you!

[@PER5Y]

Isn't self servicing an automatic MX5 the automotive equivelant of an oxymoron ?

[@knowgearsknowglory2862]

Hmmmm

[@92KidNew]

How many quarts did you end up pumping in?

[@knowgearsknowglory2862]

5.5 I think was the last count but please done quote me on that

[@arricammarques1955]

Odometer close to 30.000 miles?

[@knowgearsknowglory2862]

Not sure what you're asking.

[@joseordonez4654]

Hi bro how many quarter you add 4 or 5 ?

[@knowgearsknowglory2862]

it was right in-between. the amount of fluid will vary. The trans will hold some fluid inside so the amount you put back in will vary.

[@edwinstupka3645]

It's simple science. When the trans oil pan and filter are removed the refill capacity will be a specific amount. So far I haven't found an experienced transmission mechanic who has created a proper video that covers this critical fluid volume. Yikes!

[@mauricesoulis1590]

This explains it all right here…. 1. 240k plus miles- it runs perfect 2. 4/5 owners n still like this? 3. No other car can do this! 4. I own a mint 13’ prht in SF- 5. 10 on a 10 scale😂 Cons? Wife nor hound can fit! Oops- that’s a good thang🎉🎉