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

Problem hitting 3rd

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Old Apr 19, 2007 | 04:07 PM
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Default Problem hitting 3rd

On a '91 what could make shifts into third difficult?
It just flicks into all others but sometimes 3rd requires varying degrees of force.
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Old Apr 19, 2007 | 09:53 PM
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I assume this is a manual?

You may want to change the oil, first... just to see what is going on.

What is the condition of the clutch hydraulic fluid?

I am thinking it's a minor issue.

www.c4guru.com - Changing ZF6 Fluid - this will give you instructions on how to change the fluid.
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Old Apr 19, 2007 | 10:59 PM
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As silly as it sounds, I turn my hand around, where I can see the back of my hand and shifting into third goes so much smoother. I too struggle getting it into third, but this trick will hit third everytime.
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Old Apr 19, 2007 | 11:43 PM
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I am wondering about the shifter carrier. There is an assembly that holds the shifter in place, it's made of pig metal and can crack. Changing the pressure on the shifter can change the pressure on the assembly.
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Old Apr 20, 2007 | 01:22 AM
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Taking the slop out of that carrier/cradle helps.

3rd gear is always the first one to suck on these ZFs.
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Old Apr 20, 2007 | 09:38 AM
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Gentlemen, It is a 6spd. I must run off now. Thank you all so much. Hope to be back tonight or tomorrow.
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Old Apr 20, 2007 | 10:15 AM
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If I grind a gear, it's always 3rd...

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Old Apr 20, 2007 | 10:32 AM
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IIRC there are bias springs that help guide the shifter into 3rd gear. My ZF seems to shift better when it is warm. 3rd and 5th seem to be the "sloppiest" gear throw on my 1989.
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Originally Posted by pr1mu5
If I grind a gear, it's always 3rd...

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Old Apr 20, 2007 | 01:23 PM
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After I changed the fluid and and put in a Hurst, this problem went away. I would like to think this was the reason, but maybe I just got used to it.
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