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6th Gear Grind & Replaced Transmission
So I've been having a grind on 6th gear for a long time I think since 5k miles or so.
I took my 86 in at 14.2k miles and I demanded they take apart my transmission and they said come back when toyota reps come. They said that if there is no problem it would be $1000.00 labor charge - I told them take out the transmission there Is something very wrong. So my 6th was damaged - it looked fine but a few of the teeth were chipped. The worst was the synchros - apparntly my synchros were shot somehow. Toyota agreed to take it out of their pocket on a replacement transmission - they said this was not warranted repairs. But it seems that we have a lot of "grinding" issues on these forums. They claimed that I was shifting too aggressively to which I had a blank face to their response. We'll see how long this transmission lasts .. :paddle: |
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I wonder if all these grinding gear threads were really user error and not the gearbox itself...
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You gotta be moving pretty fast to aggresively shift into 6th lol
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Is your frs a 2012 or 2013 manufactured one ?
Im at 14xx km and have no issues |
Yeah a grind in 6th? definitely not user error. Unless you're sitting there without the clutch pushed just jamming it into gear going 110 on the highway for funs.
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my sig says when I got the car - the first month they were sold lol
i was averaging 28 mpg btw lol i didn't shifted aggressively - almost always casually never had the opportunity to track/hdpe/autox |
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My car is in first 1000 vin. Dont notice any trans problems so far, at 20k miles
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The ratios are quite closely spaced so why should going from say 4th to 6th in our box be any different from going from 4th to 5th in a less sporty 5-speed vehicle? I know there's many threads on this issue and many differing viewpoints too - I'm just trying to get a better understanding of what's going on with our gearbox. I've been driving manual transmissions for over thirty years and never experienced anything like the issues this gearbox appears to have. |
I've had my trans replaced because of the synchro going out car was at 10k mile if anyone comes up with why there messing up that would be great news being I don't wanna have this problem again being they were a little stubborn to fix it in the first place
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Looks like just a bad batch of transmission, like everything else alot of people have no problems with it and others have weird problems like a 6th gear grind. Sound like a bad assembly, improperly pressed in gear or something like that...I mean a chipped 6th gear tooth? Sounds like something was binding, NOT being abused.
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My corvettes, both with a T56 and the TR6060 had CAGS Which would force the shifter from 1st to 4th gear if you were under A certain speed. I also skip gears in this car with no issues. That's never Been an issue with manuals. There is something wrong with this tranny in its build from the factory.. They have some defective parts or are built with bad tolerances.. Skip shifting is common and not harmful unless there is something defective.. These trannys are not that fragile.. |
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I skip 5th on the daily, because I simply don't find it necessary after coming off of 4th at 4k. Aslong as your not shifting early, then skipping a gear, resulting in bogging, I see no reason how this could hurt your transmission.
5th and 6th are also my smoothest gears to engage. Unless I see hard proof that this could be harmful, I'm gunna go along with the theory that people simply just like telling other people how they should drive. |
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Telling everyone not to skip gears or use the transmission "normally" is bad advice. I would rather deal with a defect then to avoid its symptoms. A new transmission seems to be the cure. It's not a characteristic of this one. |
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Much to my regret I never had an S2000 - very nice cars! What was the ultimate cause and solution to the gearbox problems they initially experienced? |
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http://www.s2ki.com/s2000/topic/6814...ons-1999-2009/ |
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Thanks Mike, that's certainly interesting. The problems being encountered with the 86 gearbox certainly seem similar - let's see what Toyobaru have to say in the coming months. I wonder if there's an issue with quality control at Aisin?
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I love how whenever you bring something up or raise questions people just want to talk shit on here without even knowing why.
Here read up on the links from the S2000. I went through this already had two of them. Read before you say its impossible. http://s2000.com/forums/142883-post6.html Post from Honda engineer about gear skipping. This trans is Aisin may have similar issues. Until we have answers or more data I would avoid skipping gears. |
Also there was a TSB for civic si transmission, forget exactly what for but it instructed for tech to go on a ride along with owner and observe for skip shifting. Ever since I read that I always use all the gears when up shifting, double clutch rev match if skip shifting down, and rev match if shifting down one gear.
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It's really disappointing that Toyota pulled this on you too. Subaru covered my 4th gear grind replacement under "customer goodwill" for a one time replacement, and said I was abusing it because I was shifting at 7000RPM.
You shouldn't have to pay a dime for this, fight them on it and talk to regional reps. |
Interesting reading on the Honda stuff. I have never heard of replacing brass synchro rings with carbon fiber. That just doesn't sound right.
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6th Gear Grind & Replaced Transmission
On a serious note, these manufacturers are trolling us hard and we are the 1%, except if you are speaking to one of their marketing guys. 10+ years later and Aisin is still fixing the same problems.. Who would of thought?? Lol
Edit: should of gotten the auto.. |
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I already talked with the scion/toyota reps of the district and they told me it was out of good courtesy.
According to their break down there was no sign of abuse/racing - to which I never did anyways. Interesting Side note from this transmission to my first: 1 - 2 drops more RPM than my first. 3-4 less rpm drop almost feels like 300 rpm. another note - I feel like I can feel synchros lining up before I shift in .. odd lol ive been debating double clutching but still not sure if I should bother lol |
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Can u explain why its bad? I thought double clutching would help reduce strain on synchros
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6th Gear Grind & Replaced Transmission
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Ill try and find the link and post it up here for you Edit: http://www.civicforums.com/forums/17...-good-bad.html |
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Just reading this thread is pissing me off. The transmissions should be engineered well enough to handle much more abuse than a normal person could exact on it. I'm not talking about severe abuse, but normal shifting. I also consider skip shifting to fall within normal operation. These cars are ALL in their warranty periods. Toyota should GLADLY fix or replace any of these faulty transmissions without the BS. I understand what Dezoris is saying, but I'll be damned if I'm going to drive "cautiously"in case I hurt the car. Sorry for the rant.
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6th Gear Grind & Replaced Transmission
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Edit: I have the 6-5 grind. I have learned that if I shift real slow and just let it slip in, she doesn't grind. Any kind of quick shift.. No bueno. |
In my 12.5 year ownership of my high revving 6sp celica I have often skipped gears especially from 4th to 6th. The car recently clocked over 320K's & the box is working just fine. My 86 6sp is not far from 10K and it too is just fine, except for the cold start grind from 1st-2nd & 2nd-3rd on occasions (no adjustment or fluid change yet).
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Sure maybe double clutching might put a little more wear on the clutch parts, but it's easier on the transmission in certain situations. I usually only double clutch when I'm going into first when I'm moving and going under 10 mph. |
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I meant if you do it all the time then it might cause more wear in a long run |
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Double Clutching is quite literally syncing the 2 shafts without having to use the synchro to do it. When you double clutch your synchros do almost no work. Edit: that civicforum link is specifically asking about the clutch/engine. Double clutching means you are pressing on the clutch pedal more often but usually when a double clutch is performed so is a rev match. No extra wear or stress occurs on the engine (probably less due to rev match) and the clutch is doing a negligible amount of extra work. The only thing that's actually getting more use is the throwout bearing. Reading that thread cost me 2 IQ points. I feel dumber after reading it. |
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