2.5GT6MT Posted October 14, 2019 Share Posted October 14, 2019 I had a recent issue with gear loss in my 2010 legacy gt 6 mt. I was leaving somewhere and it wouldn't go into reverse so I let it roll back a little and tried again this time it went into reverse with a clunk and what felt like a stuck emergency brake that went away after I reset the button. So I get to the exit of the parking lot only going into second gear and find out I can't go into first gear anymore. Upon further inspection I've lost first, third, and fifth gear but I continued to go home using second and fourth mainly but lost fourth and sixth about a quarter mile from home so I proceeded in second where I realized I also lost reverse. I now currently only have second and neutral and when I checked the dipstick it was bone dry with no signs of leaks and Subaru saying it was fine when they checked it 3 months ago. So questions are should I try adding fluid hoping it's just not enough fluid to pressurize the gear shifting mechanisms or if it's shot how hard is swapping in the spec b transmission for a stronger transmission with better gearing if I had spec b axles, transmission, and rear diff? Link to comment Share on other sites More sharing options...
FLlegacy Posted October 14, 2019 Share Posted October 14, 2019 What year and trim is your legacy? Link to comment Share on other sites More sharing options...
DrD123 Posted October 14, 2019 Share Posted October 14, 2019 Could be a number of things - there was no grinding or other noises? when you say you lost a gear, what does it do when you try to go into that gear? I would guess it's probably not the clutch fork or pivot ball (that would impact all of them) or shredded gears (unless you are leaving out a bunch of the story!) - If the transmission is otherwise silent when trying to get into other gears, I'd start looking at the shift cables and make sure they are secure/undamaged, and that they are actuating the levers on the transmission as they should be. Link to comment Share on other sites More sharing options...
NVAKeith Posted October 14, 2019 Share Posted October 14, 2019 What DrD123 said. Check the shift linkage. Here’s another thread where someone “lost” a couple gears because an unfamiliar driver forced past the reverse lockout. https://legacygt.com/forums/showthread.php/6mt-problem-going-into-5th-and-6th-gear-263001.html?t=263001 Link to comment Share on other sites More sharing options...
2.5GT6MT Posted October 14, 2019 Author Share Posted October 14, 2019 (edited) It's a 2010 Subaru legacy 2.5 gt limited with the 6mt. I've had it for 3 years with a slight scraping noise that sounded like a loose heat shield. So I asked a tuning shop and they said to try the clutch so I got a stage 2 clutch put in and was told the transmission is naturally noisy because it kept causing my accessport to go out of tune due to noise. I thought it was strange but didn't see anything online and didn't have issues until about six months ago when the noise got worse and I noticed it was only while it was in gear and got louder when I hit the gas. I only drove it when necessary and Subaru said everything was good when I got the air bag recall done. The day this went down I also heard a jet noise that went with how hard I hit the gas pedal. As for what happens is I'm locked out of every gear but 2nd and neutral. The shifter will not go anywhere else but that path and the mysterious missing transmission fluid is also bothering me not that I ever checked it but I did bring it to Subaru twice a year. I am also unsure how the cable shift linkage works but a friend said it might count on the oil for pressure. Anyone have any ideas? Edited October 14, 2019 by 2.5GT6MT Link to comment Share on other sites More sharing options...
Justen1987 Posted October 14, 2019 Share Posted October 14, 2019 I would suggest double checking the shift linkage for the shift problem. maybe one of the cables popped off. as far as the noises go I have no idea Link to comment Share on other sites More sharing options...
DrD123 Posted October 15, 2019 Share Posted October 15, 2019 it's a splash lubricated transmission - there is no pump or oil pressure to consider. The shift system is mechanical, not hydraulic. There are cables that are actuated from the shifter that move levers on the transmission that move the shift forks. if it just won't go, with no sound/additional grinding, then I would lean to their being a problem with one of the linkages or one of the cables. There was a post a while back where someone lost reverse and it ended up being a cable issue. Link to comment Share on other sites More sharing options...
GTEASER Posted October 18, 2019 Share Posted October 18, 2019 Probably either the shifter cable or the shifter lever mechanism in the car. GTEASER's 2012 Legacy GT - Sold GTEASER's 2009 XTeaser - Sold GTEASER's 1992 Legacy SS - Sold Link to comment Share on other sites More sharing options...
2.5GT6MT Posted February 23, 2020 Author Share Posted February 23, 2020 Thank you all. I am just waiting for some warmer weather to get back into this but I had a few questions. 1.) What do you recommend for gear oil as I'm not sure what the dealer had put in it since I bought it at a Lexus dealership I'm just going to drain it. 2.) What's the best method to inspect the shift linkage as I couldn't see anything wrong underneath when I inspected for leaks. 3.) What could of caused the loss of transmission fluid if I don't see any leaks? 4.)I'm also at 105,000 miles so what service should be done such as timing belt, tensioners, and the like as this is my first car that isn't from 1990 or earlier? 5.)Lastly I just read Brendan's STI 6MT Swap and feel inspired to try it if it's a transmission failure as the trans has always had a certain noise that bothered me and was making funny noises every so often for a month before this when I would drive it. So the question is what's the better option if I don't have the skills, space, or tools to do most of that swap myself? Link to comment Share on other sites More sharing options...
dgoodhue Posted February 24, 2020 Share Posted February 24, 2020 Thank you all. I am just waiting for some warmer weather to get back into this but I had a few questions. 1.) What do you recommend for gear oil as I'm not sure what the dealer had put in it since I bought it at a Lexus dealership I'm just going to drain it. 2.) What's the best method to inspect the shift linkage as I couldn't see anything wrong underneath when I inspected for leaks. 3.) What could of caused the loss of transmission fluid if I don't see any leaks? 4.)I'm also at 105,000 miles so what service should be done such as timing belt, tensioners, and the like as this is my first car that isn't from 1990 or earlier? 5.)Lastly I just read Brendan's STI 6MT Swap and feel inspired to try it if it's a transmission failure as the trans has always had a certain noise that bothered me and was making funny noises every so often for a month before this when I would drive it. So the question is what's the better option if I don't have the skills, space, or tools to do most of that swap myself? 1 - If you bring it to Subaru dealer I would recommend Subaru ExtraMT for the transmission oil that is the factory fill for the 2014 up 6MT cable driven transmission. 2- You will need to remove the shifter plate to inspect the cables going the shifter assembly in the car. Follow those cable to see where they attach to the transmission. You will need to this all from under the car. 3) How do you know it has lost fluid? Did you check the fluid level? Maybe the prior mechanic that changed the fluid didn't fill it up properly? 4) 105K is the timing belt interval. It probably a good time to replace the water pump as well. If you car has been driven the snow belt, you should plan on getting new turbo coolant lines and turbo heat shield as they will be rusty. The GT timing belt is much more involved than a typical Subaru non turbo 2.5i timing belt. 5) Buy a replacement 5th GT 6MT transmission. You may be able to find a used one, but the 5th Gen GT transmission was unique to this car because of the way the engine mounting. The STI transmission swap is a significant expense that to pay shop to do the swap approaches the value of the car. Link to comment Share on other sites More sharing options...
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