Ok - Guys I need your help deciding what could be wrong. Today I got on it and was shifting from 1st to 2nd at redline with no problem, then tried to go from 2nd to 3rd at 6400 RPM and it locked me out of 3rd gear? I just figured I messed up and missed a gear...... I continued on and wanted to try again, missing a gear rarley happens for me, it was bugging me!

I did the same again - 1st to 2nd at 6500 rpm, no problem and the 2nd to 3rd at redline 6500 rpm and again it wouldnt let me in the gear, I had to force it... Its seemed sticky and as if something in the car would not let me go into 3rd gear at that rpm.... So I tried again at 5800 rpms and NO problems, it was smooth and smooth at all other rpms lower than about 6400.

Now I know I should have just parked it in the garage, but I just couldnt, it was killing me to figure out what was wrong. I tried this whole series again 6 more times on a back deserted road by my house. The first two times doing it again, no shift at 3rd (locked me out - had to force it), but the last 6 times, were ok and no problems at redline. I went ahaed and parked it for the night and to cool down....

What do you think it is? Is it a computer issue? Is it a gear issue(I dont know about this since it is ok at lower rpms)? Is it something to do with the clutch?

I need your help!!!!! Please advise!

Thanks guys, I hope I can get a response, I need to sleep tonight and with the uncertantity right now, I wont!

Thanks

 

I was going to POST the exact same thing My first time I went thru the gears, I didn't miss (because I was racing my friend's MB SL 55 AMG ) but the last couple of times I ran it to redline, I got stonewalled from 2nd to 3rd! This could be problematic in a drag race. So i tried a couple of times more and had the same problem! We need tips from the experienced 6-speeders!

 

About a couple of months ago there was a thread on just this matter. If you try to speed shift and guide into 3rd, a number of us have had a similar problem. try ramming it straight forward, but don't apply left pressure while doing it. I have a '93 and '05 6-sp's. Never missed a shift in the 93 going frm 2nd to 3rd; miss it about half the time in the 05.
Rom eo

 

Try the open palm shift technique. It will help. I ended up installing a B&M short throw shifter.

 

Wass - What do you mean exactly by the "Open Palm Mathod"? Do you place your palm on top of the shifter and around the side of it? Please explain....

Thanks

 

Put in a B&M shifter and problem sloved. The shifter and tranny in the C6 is the weak point of the car. The dealer tore my tranny apart 2x and put a new tranny in with no fix. I now have 14,000 miles on my C6, and it's a different car with the B&M shifter.I just ordered a 2006, which GM made some changes to the tranny and diff. I hope the 2006 changes help! Good luck!

 

There is definitely a technical bulletin being developed on this problem according to my contact at my local dealer. Possible that temperature is an issue.

Is everyone noticing that their transmission oil temp is pegged at the highest temperature on the scale?

-Evado

 

I use my normal grip with an open relaxed palm and push almost straight up (slightly away from me). The spring will force it into 3rd. You can also try open palm with the back of your hand facing you and push up to 3rd. as mentioned.

 

I have somewhat similar 2-3 shift problem as yours. A few weeks ago, I was racing my friend's Cobra and I missed 2-3 shift several times. First, I thought it was just a mis-shift although I rarely miss shift. Couple days ago, I was getting on my car on the freeway and all of a sudden it started acting weird. When I shift into 3rd gear at about 6400-6500 RPM, it will shift into 3rd gear however, it will not engage until rpm drops to 6000 or so. It's like clutch pedal getting stuck on the floor. I've tried this several times it only does it between 2-3 shift. Something is definitey wrong. I'm taking car in on Monday.

 

Not to post the same thing but i had a problem with this when i had my 05. I thought it was just me because i came from the 4 speed 86 which you could slam into 3rd and never miss a shift. Eventually i started doing the open palm tech. Basically i would just put my hand behind the shift **** instead of around the side and push it straight forward. The spring is stiff enough it will guide it to the middle. It seemed like any right pressure at all would lead to this "mis-shift". Im hoping the solved this for the 2006 but im not holding my breath.

 

Trying to "guide" it into 3rd almost guarentees you'll hit the gate instead of the gear. As mentioned previously, rest the heel of your palm on the back of the shifter and push forward - the springs will do the rest. B&M (or other short throw) makes this a different car. "New shorter throw" in the C6 my a$$ - the thing shifts like an F-150.

The clutch to the floor is an entirely different issue, and I don't think the TSB fixes it completely either. If got the 1st gear issue pretty bad (end up having to start in 2nd 1/2 the time). I'm just waiting for all the TSB's/recalls to pile up before I get the dealer to order the parts and lose the car for a week. I'll likely will put an Z06 clutch in then...

Rick

 

I just "flick" it into 3rd with my thumb(put thumb behind shifter), looked like an a**hole when I missed a 2-3 shift once. I think i'm getting a Hurst or B&M tho.

 

Is there a particular model of B&M shifter? Where did you purchase it? So you've never had the problem again? Just curious. I purchased the car for lapping only, and have run into this problem for the first time, and it is pretty dangerous when those behind you are a car length behind, and expecting you to take off and you don't.

-Evado

 

Just as dangerous with a truck sitting behind you at a red-light, and expecting you to move, when you can't get the damn thing into 1st gear (even double clutching as the owners manual advises). Probably the most frustrating thing about the car I've run into so far - way more so than developing the correct technique to do the 2-3 shift...

Rick

 

Since going to the B&M, my first gear problem went away. The only problem I have now is 1st to 2nd. That problem is that you have to hold the shifter over to the left(more so than before) or you go in to 4th. What I am thinking that the real problem with the MN6 is shifter adjustment. I followed the Service Manuals' instructions and used the neutral lock pin to set center neutral.

 

Since going to the B&M, my first gear problem went away. The only problem I have now is 1st to 2nd. That problem is that you have to hold the shifter over to the left(more so than before) or you go in to 4th. What I am thinking that the real problem with the MN6 is shifter adjustment. I followed the Service Manuals' instructions and used the neutral lock pin to set center neutral.That might be 1-4 skip shift you're feeling right there.be careful you don;t break something by forcing it.

 

I had a 2005 and now have a 2006. I'm 59 and have never had a problem with speed shifting (keep throttle on the floor while shifting) with either car.

 

Nix on the 1-4 skip shift, this is a different issue that can be adjusted away-it is just a major pain.

 

True neutral, is centered at 3-4 (6 speed, remember?). So you would have to pull to the left for the 1-2 shift. The 1st gear from neutral issue has to do with the 1st gear synchro. Since it's documented in the owners manual, I guess you could call it a FEATURE. There is a TSB on it though, that calls for replacing the 1st gear synchro. Usually, hitting the clutch 2x allows you to get in, or going into 2nd then first, or going into 2nd -> moving forward a little -> then into 1st. All of these work to some degree, but alot of times it just won't go into first and I just start out in 2nd, lest the yahoo behind me nails me in the rear...

Rick

 

There's a little side to side adjustment on the shifter carrier as well as fore and aft. I know about the synchro problem, but the first install attempt was prefect, but I had a real bad rattle issue. The second install using the neutral pin got rid of the rattle, but it takes a strong pull to the left to get it in to 2nd as well as 2nd has become notchy so I have a bit too much fore adjustment as well as side.