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78 Auto will not engage reverse, help!

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Old Oct 20, 2012 | 03:53 PM
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From: Christiansburg Va
Default 78 Auto will not engage reverse, help!

Hi guys, I've been searching the site but I can't find any thing on my problem so I'm starting a thread with the hope that I won't have to take her into a tranny shop.

She won't engage into reverse. When you shift it into reverse there's nothing. Can't feel anything engage. You can rev the engine all you like but nothing grabs. All three of the other gears work fine. Unfortunatly I'm kinda stuck in my drive way since I can't back it out.

Oh and today I dropped the tranny pan and replaced the filter and gasket. There was a fair amount of sludge in the bottom of the tray. I dropped a bottle of zmax fluid in along with the new valvolen fluid.


Any ideas would be great.
Thanks in advance.

Last edited by Rick4474; Oct 20, 2012 at 04:07 PM.
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Old Oct 20, 2012 | 04:36 PM
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time to rebuild
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Old Oct 20, 2012 | 05:13 PM
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did you check that the shift cable isnt binding otherwise oldalaskaman is correct.
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Old Oct 20, 2012 | 06:51 PM
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Yeah I checked the cable operation and the vacuum line.
Those seem to be fine.

Thanks for the confirmation of what I thought was going to be the
answer.

Cheers
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