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

93 6spd trans lockout

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Old Dec 20, 2008 | 11:30 PM
  #1  
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Default 93 6spd trans lockout

hello,
need help i cant get my shifter in reverse i cant see that anything is broke or un hooked am i missing something??
no matter how hard i pull it up i just cant get it into reverse, did some searching and really didnt come up with anything.
any help is welcomed and thanked for.

-roper
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Old Dec 21, 2008 | 12:14 AM
  #2  
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Originally Posted by RoperC4
hello,
need help i cant get my shifter in reverse i cant see that anything is broke or un hooked am i missing something??
no matter how hard i pull it up i just cant get it into reverse, did some searching and really didnt come up with anything.
any help is welcomed and thanked for.

-roper

Got your foot on the brake? I can't recall if the standards had a lock out then or not. From what I understand it didn't last long.... Aside from that it sounds like it's gonna be internal
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Old Dec 21, 2008 | 04:44 AM
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roperc4-

Interestingly enough I had a problem with my ZF a few months back. I would row through all the gears, but once in 4th, it would "lock me out". I couldn't shift up, and I couldn't shift down. I would have to come to a dead stock to get back into 1st. The tranny would do these repeatedly, and even do the "skip shift" into fourth and again lock me out (this time not allowing me to go into second or third).

Regardless, the problem was with the CAGS... I drove it (in fourth) all the way to exotic muscle an just had Merle install the skip shift eliminator on the spot. Problem solved! Didn't have any issues with it since.
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Old Dec 21, 2008 | 06:36 AM
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Originally Posted by mnstrlt1
Regardless, the problem was with the CAGS... had Merle install the skip shift eliminator on the spot.
Unplug the CAGS plug at the trans and see if that makes a difference.
Eliminator only keeps crap out of plug
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Old Dec 21, 2008 | 08:10 AM
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Default Long shot....

.....but I've had this happen in my 90. The set screw, 3mm allen type, in the reverse collar loosened up and when I pulled up on the reverse lock out ring the linkage rod didn't move. I know that ring/collar thing was disconned at some point in the C4 production and replaced with a "crash thru"......proly because that collar is cheap plastic and the threads strip out on the set screw....ask me how I know!:o

My first though would be the CAGS....pull the plug.


Tom
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Old Dec 21, 2008 | 08:34 AM
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Another test is to turn the engine off then try to puy it in reverse. If it goes in your clutch may not be releasing completely.
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Old Dec 21, 2008 | 01:28 PM
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Ok I will try these things but the plastic piece I pull up on used to pull itself back down now there is no resistance on the way up and it will not pull itself down I have to push it. And still does not unlock my gear. All other gears work perfect.
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Old Dec 21, 2008 | 01:29 PM
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Is there a picture somewhere of wherethe linkage is atthe top of the shifter? This is me hoping whatever is going on is outside the trans.
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Old Dec 21, 2008 | 05:37 PM
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Originally Posted by RoperC4
Is there a picture somewhere of wherethe linkage is atthe top of the shifter? This is me hoping whatever is going on is outside the trans.

bottom of page
http://www.zfdoc.com/S640Parts.htm
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Old Dec 21, 2008 | 06:01 PM
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Well it just turned out to be that little Allen bolt near the top of the shifted. Thanks for all the help
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Old Dec 22, 2008 | 11:53 AM
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Originally Posted by rodj
Eliminator only keeps crap out of plug
Not entirely true. While it does make for a tidy installation, it also contains a resistor (on years that need it) that fools the car's computer into thinking the CAGS is still operational. That way there's no trouble codes thrown.

Larry
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