2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

shifting problems after clutch install

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Old 10-08-2009, 02:04 PM
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shifting problems after clutch install

I installed the gm clutch upgrade in my '05 cobalt ss/sc. The install went well, followed gm's write up all the way through. BUT! When I stomped on it for the first time and went to second, it took about a second and a half to go into gear. It does it every time now, and its a little slow going second to third. I don't know if one of the shift selectors got bumped, or what.

If anyone has experienced, or diagnosed, what this problem is....please let me know what the deal is. I just don't wanna get down there, start moving shift selectors around, and something break.

Thanks for your help, in advance.


Brandon
Old 10-11-2009, 03:57 PM
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anyone? i can't be the only cobalt owner that has had this problem shifting.
Old 10-11-2009, 03:59 PM
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What tranny fluid did you use?
Old 10-11-2009, 04:19 PM
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Did u allow the wear in period? Like 500km. I hope u didn't just stomp on it right as soon as u left.
Old 10-11-2009, 07:58 PM
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or did u bleed the system good when u were done... small air pockets can cause not enough pressure to allow you to get into gear
Old 10-12-2009, 08:55 PM
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Originally Posted by slowswap
What tranny fluid did you use?
I didn't change fluids.
Originally Posted by loco-performance
Did u allow the wear in period? Like 500km. I hope u didn't just stomp on it right as soon as u left.
yes, i broke the clutch in properly. and, it's not even 500mi.
Originally Posted by Jrhdpaintball
or did u bleed the system good when u were done... small air pockets can cause not enough pressure to allow you to get into gear
I bled the system at the slave, first. Then, pulled a vacuum on the master cylinder like the gm tech manual calls for.
Old 10-13-2009, 11:33 AM
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Did you replace the slave?
Old 10-13-2009, 08:16 PM
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i have the same problem too. o6 ss lsd. i changed to a used fidanza fly and used spec stage 3+ clutch. didnt change the slave cylder though. some times when i get on the car the clutch pedal will stick in and the shifter is hard to engage. so i have to pump up the clutch to return back to normal. i bleed it with 2 people though old fashion way. i need to buy speed bleeders asap.
Old 10-13-2009, 11:08 PM
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You should always replace the slave when doing the clutch.
Old 10-13-2009, 11:20 PM
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Originally Posted by 1newZX2
i have the same problem too. o6 ss lsd. i changed to a used fidanza fly and used spec stage 3+ clutch. didnt change the slave cylder though. some times when i get on the car the clutch pedal will stick in and the shifter is hard to engage. so i have to pump up the clutch to return back to normal. i bleed it with 2 people though old fashion way. i need to buy speed bleeders asap.
problem right there. you have to machine the flywheel. i am haven the same problem and you need to buy a matching flywheel with clutch like centerforce dfx. i learned the hard way about this. but the step height is different from stock flywheel.
Old 10-14-2009, 01:17 PM
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I heard about this problem with many other club members and asked a GM tech about this when he does the clutch in our cars. I told him about bleeding it like the GM handbook calls for and I bought all the tools for it to bleed it at the reservoir.
He had told me that this is a common problem for all complaints on guys that do it themselves and to bleed it at the bleeder screw like a car. With one person pumping the clutch and holding while the other bleeds the air out. The other method does not get out all the air. Try this and see if it works.
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