JAMMED in Gear after wreck? Mazda Miata Manual Transmission Teardown

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Published 2024-03-13
For MIATA parts Email us at [email protected] or visit www.Importapart.com.
Here's weekly dose of your catastrophic engine forensics! Every week you can find a new teardown of some abused, misused and/or poorly designed engine. Here are some of my favorites:
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F150 5.0 Coyote Gen 1    • 11-14 Ford F150 5.0L Coyote Teardown:...  
8.0L Ram V10    • 8 LITERS OF DESTRUCTION! Dodge Ram V1...  
Audi V10    • DEVASTATED Audi S6 5.2L V10 Engine Te...  

Today, something different! A 5-speed transmission from a 2000 Mazda Miata! This transmission has 113K and we could not get it to shift in or out of gear. It seemed to be stuck between gears and likely from the wreck the car was in. This video is both a salvage operation to get the bell housing and tail housing off to fix broken transmissions, and a fact finding mission to try to figure out what happened.

I own and run a full service auto salvage business called Importapart and we specialize in Miatas. Don't hesitate to give us an email at or message listed above for parts!

I hope you enjoyed this video, as always I love all of the comments, feedback and even the criticism. Catch you on the next one!

-Eric

All Comments (21)
  • @Ar0d
    We like different, don't we boys?
  • @MrMayNCMS
    Ok, the blue tape under the shift knob just confirms what I suspected. I owned a 2000 Evolution Orange Miata with just over 100k miles in Mississippi that I wrecked on June 11th of 2023. I purchased the car in the spring of 2021. It shifted ... ok... before the wreck, but when the tow truck was loading the car, I noticed the rear tires were not rolling and I assumed the transmission was jammed. The wreck occurred as I was driving on a two lane highway at about 45mph when another driver in a Dodge Challenger (rental) turned across my lane about 30 feet in front of me. I had no room to Dodge... the car and had to settle for standing on the brakes. No major injuries to the occupants of either car, but I was sore for over a month from the seat belt. I have been a follower of your channel for a while and hoped that somehow, my wrecked car would end up on your channel. Got my wish. Glad to hear the engine and other parts were salvageable and still live on. I miss that car.
  • @DanDoerfler
    Malice in the rotational switchey palace...
  • @thomastacker6485
    The shifter was stuck because the inertia from the wreck caused one of the shift hubs to move without the shifter being in that location. The detents between the shift shafts keep you from going into 2 gears at once. To fix this you can remove the reverse light switch and use a screwdriver to force the shaft back to the neutral position, thus aligning all the shifters again. I worked at a Mazda dealer back in the 80s and 90s. I was in the first Mazda troubleshooting contest in Arizona in 1989, I made 2nd place. Thanks for all the great videos! I really enjoy your channel. Keep up the good work.
  • @tommydmot7725
    Eric is out here doing what 90% of what shop teachers should do. just tear stuff apart and talk about what to look for and what might cause it. Hell this goes for pretty much everything that you physically interact with. I learned so much, in less than 30 mins its insane
  • Outstanding video. Old guy here I'm sitting here on the senior center bus from a Walmart run. As a kid back in the late 60's I had a old 1965 Mustang 3 on the floor and I had to rebuild the transmission. It was my first time doing anything like that. It did work after that also.
  • @MrHanichak2
    The fact that I finally get to see the inside of a manual transmission since I drive one. It really lets me know more about how I'm driving! And I'm so happy that I don't set my hand on the stick! 😂
  • @davestark2015
    Intro was way wicked funny. And your honest approach to business is something we don't see much anymore. Thank you. Cheers Sir.
  • @FinnBojorgensen
    You have earned a new fan, maybe your youngest fan ever... A few weeks ago, my grandson, just turned three, joined me behind my computer watching you tear down an engine. He stayed there watching for over ten minutes and then went to some other occupation. Ten days later, he joined me and immediately asked me to put on a video. I suggested a cartoon, but no. He wanted to see mechanics. I switched to a car repair channel like Rainman Ray's, but he insisted that I switch to "the channel where the man takes apart things". I opened up one of your videos and he was happy ! He stayed watching for quite a while. I think that my next gift for him will be a set of spanners... 🙂
  • @TurboJoe304
    Watching you abuse that 3/8 stubby impact was what made me finally get one for myself and my obs lsx build
  • I'm not much into cars, buf your videos I do like to watch. Partly because of the comedic bits here and there, but mostly because the sheer amount of knowledge you have explaining the teardowns. Also the integrity you show for your shop is a huge plus, so keep it up!
  • @carsncabins1349
    I love how humble you are man.. you deserve every bit of success that comes your way
  • @barneymiller6204
    This was a fine teardown, didn't mind that it wasn't an engine at all.
  • I'd call it rebuildable, but she's tired, and not worth the cost. Love doing something a little different. Keep it up!
  • @paulvaz5846
    Hey Eric, thanks for that one! Never seen a gearbox dismantled like that
  • @rx7racerca
    I liked this, because I'm a huge manual transmission fan, but also because I've owned the RX-7 version of this transmission for 26 years, in the form of an FC. Glad to say when I've done my fluid, I saw nothing like the sludginess you found here.
  • @dougdority5589
    Had a 90 mx5 , a known problem is a weak detent for the shift interlock dog. Had the transmission locked in 1st and reverse at the same time. Easy fix, (10 minutes under car) remove reverse switch and move reverse fork with a screwdriver. Dog then can move again. That transmission was fine for another 250k miles. I image a lot of people replaced their transmission because of this easily fixable issue.
  • @fuse8052
    Integrity. Eric is the definition of integrity. Entertainment is just secondary.
  • @cam32112
    Love the intro & the midweek videos. A little hump day happiness to get us through till Saturday! Thanks Eric!