C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1996 Auto 1-2 shift problem

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Old Mar 13, 2007 | 01:58 PM
  #1  
TJANKOVS's Avatar
TJANKOVS
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From: GLEN ELLYN, IL, USA
Default 1996 Auto 1-2 shift problem

Hello-

Started noticing my auto trans is 'missing' it's 1-2 shift when cold under WOT. By missing I mean it's hitting the rev limiter and I have to let off the gas for it to shift. Appears to be ok when warmed up. Fluid level is good and I changed the filter and fluid last year. Noticed last year when I went out for a track day the trans temp got really high 260F and it started slipping in 3rd gear. This was after 45min of beating on it so I was not too worried. Is this trans on it's way out? Car has 100k and has never been driven gently. Shifts nice and smooth and quick. Anything I should try or just start saving.

Thanks
TOm
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Old Mar 13, 2007 | 04:25 PM
  #2  
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snowmaker2000
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Originally Posted by TJANKOVS
Hello-

Started noticing my auto trans is 'missing' it's 1-2 shift when cold under WOT. By missing I mean it's hitting the rev limiter and I have to let off the gas for it to shift. Appears to be ok when warmed up. Fluid level is good and I changed the filter and fluid last year. Noticed last year when I went out for a track day the trans temp got really high 260F and it started slipping in 3rd gear. This was after 45min of beating on it so I was not too worried. Is this trans on it's way out? Car has 100k and has never been driven gently. Shifts nice and smooth and quick. Anything I should try or just start saving.

Thanks
TOm
I would contact Pete K. He is the transmission guru on this site.
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Old Mar 13, 2007 | 05:17 PM
  #3  
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JD'S WHITE 93
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I would change the fluid again. My car did something similar, I would jump on it and it would downshift and grab first gear and then smack the limiter. I changed the fluid and all is good. The fluid that was in it looked o.k. to me but I guess it wasn't. I hope that's all it is on your car as well.
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Old Mar 14, 2007 | 07:42 AM
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TJANKOVS
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From: GLEN ELLYN, IL, USA
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Originally Posted by JD'S WHITE 93
I would change the fluid again. My car did something similar, I would jump on it and it would downshift and grab first gear and then smack the limiter. I changed the fluid and all is good. The fluid that was in it looked o.k. to me but I guess it wasn't. I hope that's all it is on your car as well.
Thanks....I'll give that a shot. Just added some of the Lucus trans stuff and it shifts even better. I'll see if it misses again this morning.
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Old Mar 14, 2007 | 10:27 PM
  #5  
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From: Twinsburg OH
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Originally Posted by TJANKOVS
Hello-

when cold under WOT.

Thanks
TOm
I do not know about the trans trouble but cold and WOT do not go well together.
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Old Mar 14, 2007 | 10:46 PM
  #6  
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From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
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Time For A Rebuild
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