today my car hit 4,700 miles and today my car also was grinding when shifting into 5th gear at any RPM over 3,000. i know this issue has been addressed before, but if someone could refresh me on what the fu_k is wrong with my 5th gear, i'd appreciate it.
thanks

 

Most likely there is nothing wrong with your 5th gear. Typically, when you start to grind gears while driving normally this signals that your clutch is going. This would make sense considering that quite a few people are complaining about clutch problems.

 

Sounds like a bad syncro if it only does it over 3,000. The syncros seem to be gated such that shifting at speeds over 3,000 is much smoother than shifting at lower engine speeds. You may want to check your pedal free play (do a search you'll find the thread I think timzcat mentioned that his was off for sure) which could lead to improper disengagement of the clutch ( I think that was the jist of it, could have been the other way around though adn may keep it from fully engageing the clutch)

 

I've got the same problem and it started happening on my Evo after 3000 miles or so. It's taken my local mitsu dealer 3 weeks to get anything done about it. First I had to take it and have them confirm it was grinding, then after that they said they needed someone from Mitsu to look at it. Then just last week I was told this is a KNOWN problem and mitsu have a fix for it. Parts are on order and I hope to get it fixed next week.

I was also told if you have this problem reverse is harder to engage , but mine seems fine.

Hope you get your Evo fixed quicker than mine.

 

I just got a grinding problem too. Except it's 4th gear. It's odd though, it only grinds when I'm near redline in 3rd gear and I shift to 4th. Downshift from 5th, no problem, just from 3rd gear. It only happens when I'm flooring it in 3rd and I try to shift slow or fast. I'm absolutely positive I have the clutch pedal all the way to the floor when I shift. It only does it between 6-7k rpms in 3rd, anything lower and it's fine. It's almost as if it's the linkage isn't engaging the gear all the way. Any ideas? This will be a problem explaining it to the dealership because of the high speed at which it happens. I can hear it now, "well, this is abuse to the transmission because you shouldn't drive that fast."

Edit: I forgot to add that it started Friday night, it happened twice on the way to the track, that was the first time it happened. It also happened on my 2nd to last run out of 6 runs. These 3 times it would just grind in 4th and not even engage, and I'm positive I shift right, like I've done a million times before. On the way home from the track it in grinded a little but it still engaged, now, 2 days later, every shift it grinds very little but engages fine. It's all weird.

 

the thing is, i've never drag raced my car and never launched my car either, there is no reason for my clutch to be acting worn or improperly at all. the problem is that my car is modified and regardelss of the fact that my modifications have nothing to do with the tranny, i'm sure my dealer with instantly point the big finger at me and nothing will get accomplished.

 

Exactly what modifications do you have? The Magnuson-Moss Warranty Act prohibits manufacturers from denying warranty claims merely because your vehicle has modifications, unless they can prove that the modifications were responsible for the failure. Don't let them dick you around.

 

It would be mighty helpful for those of you posting problems with their Evos to post your Build Date .

I've found that sometimes my left foot sort of hits the dead pedal (I don't have wide feet, a size 10, slightly narrow) and will not allow me to put the clutch all the way in...which causes a bit of bump in the gear shift. Make sure your floor mat is secure and is not under the clutch pedal. I'm sure most of you check this stuff, but it's super frustrating to blow a shift or grind when the stupid mat moved. The higher the RPM the faster you can shift (ALWAYS letting up on gas, speed shifts are a no-no), when you're loafing make sure and give the syncros time to mesh up - you can feel a somewhat "soft" or blunt engagement rather than a sharp metal clash if you rush. The syncros feel much better than the WRX.

 

intake, turbo back exaust, BOV, upper intercooler pipe, small battery,Boost control, S-AFC and the stuff that goes with it. none of which has anything to do with the tranny, but i can see them saying that having more power places more stress on the tranny, what do you think?

 

Yeah, thing is they have a good case that those mods put extra stress on the tranny (in fact the entire drive train). Better put it back stock if it's not too late already.

I'm not doing anything other than a catback and a forge until some of these tranny / clutch problems get sorted out.

 

No issues going into 5th at all, even under high speed hard acceleration (interstate bansai runs).

Only issue ever is 1st to 2nd, and thats more due to too fast a shift and badly timed clutch release on my part.

 

My Evo also experiences the shift grind problems in 4th and 5th. It seems to be only when I'm reefing on it really hard though. I couldn't tell you how often it does it in 4th, but I can say that when I wind out 4th and go immediatley into 5th it grinds.

My Solution:
Let the revs come back down before forcing the issue.

But I'm interested that you say there is a fix for it. Can you enlighten me?

 

Same here. Only grind is 4th to 5th at over 6k RPM. As I recall, I didn't notice it until around 1800 miles. I started redlining it at 1000 miles and I know it didn't do it at first. I found that double-clutching works. I'm not blipping the throttle in neutral, just letting the clutch out & in really quickly in neutral before I push it into 5th. At first I thought the delay is what helped, but if I don't double-clutch, I have to shift REALLY slowly into 5th to do it without grinding. Like push in the clutch & wait about 2 seconds. Anyway, I decided to just live with it unless it gets worse. I figured it would be difficult to show the problem to the dealer since I have to be going around 100MPH for it to happen

 

Hate it my car grinds going into 4th at anthing around redline. Also noticed that now when I am crusing on the freeway and drop it from 5th to 4th around 80mph it grind really bad. Just don't think that right now it is noticible for the idiots at the dealer to warranty it out. Cause it doesn't grind under normal driving. Guess I will just wait till it completly goes out.

 

My EVO has had the transmition rebuilt 2 times and now its on a whole new trans. So far so good. This is a known problem and AFAIK the only fix is to REPLACE the trans. Rebuilding it does nothing. If my car breaks agian its a lemon. It has nothing to do with any modifications nor driving style. It is purely a car issue. Also is said to happen ususally withing 2000 miles each time. So far I have about 750 miles on the new trans.