C4 not shifting into reverse from time to time

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C4 not shifting into reverse from time to time

Postby landshark » Sat Aug 30, 2014 3:40 pm

In the last two weeks I have been having an issue where the C4 won't shift into reverse right away. I have to change between park and drive 8-10 times before it will decide to thump into reverse. It seems like it tries to go into reverse and I feel a light thump but it acts like its in neutral. I have only notice it happening when the engine is cold - when sitting overnight or all day - if that makes any difference, might just be coincidence.

I haven't done a search on cb.com yet but assume someone here will know right away. I was thinking it might be the linkage or something. I have never adjusted the shifter since installing it after my build so might be something loose or something.
1976 Bronco "Green, Yellow, whatever", 1969 Bronco "Red", 1972 Bronco Stocker "Kind of Blue/Grayish"
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Re: C4 not shifting into reverse from time to time

Postby akaFrankCastle » Sat Aug 30, 2014 3:42 pm

Wasn't mentioned so I have to ask, did you check your fluid level?
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1972 Sport, 302, 3 speed with old school Duff floor shifter, T shift Dana 20 with JB Fab twin stick, 4.11 gears with Trac-loc, Lincoln hydroboost, Chevy disc conversion, WH gas lift gate shock kit, 33" Duratrac tires on slots and about 2.5" of lift, Stroppe installed: bumper braces, dual shocks on all four corners, GM power steering, trans cooler mount, auto shift column, rollbar.

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1972 Sport uncut, 302, C4 with 1974 column , T shift Dana 20, 3.50 gears w/ limited slip, 1966 U13 Roadster kick panel, and factory power steering.

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Re: C4 not shifting into reverse from time to time

Postby landshark » Sat Aug 30, 2014 3:49 pm

akaFrankCastle wrote:Wasn't mentioned so I have to ask, did you check your fluid level?


I forgot to mention.. no i haven't but i did slightly over fill the C4 when we installed it and have been blowing smoke ever since :)

I did push it really hard up Floyd hill the last few trips up here, including this one - smoking nice up toward the top. I will check it tomorrow morning seems logical...

if thats the cause then I guess its time to install that extra cooler i never needed.
1976 Bronco "Green, Yellow, whatever", 1969 Bronco "Red", 1972 Bronco Stocker "Kind of Blue/Grayish"
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Re: C4 not shifting into reverse from time to time

Postby Kinder » Sat Aug 30, 2014 7:06 pm

Couldn't hurt to check the linkage. Put the trans in neutral & adjust the lever to be in neutral on the column indicator, that's it.
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Re: C4 not shifting into reverse from time to time

Postby Viperwolf1 » Sat Aug 30, 2014 11:10 pm

I'm thinking low fluid level too.
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Re: C4 not shifting into reverse from time to time

Postby ZOSO » Mon Sep 01, 2014 6:15 am

Low fluid. Mine does that a lot when it's empty. Almost cant pour it in fast enough.
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