No reverse 84 auto- overfilled
Thread Starter
6th Gear
Joined: Mar 2011
Posts: 6
Likes: 0
No reverse 84 auto- overfilled
Hope you can help. I have an 84 automatic that was shifting fine. I was trying to stop a leak and added a 8 oz bottle of stop leak to a full transmission. Almost immediately I lost reverse. Still have all forward gears. I tried removing a quart of fluid but still no reverse. Will draining all of the fluid out and refilling get reverse back? Thanks
Thread Starter
6th Gear
Joined: Mar 2011
Posts: 6
Likes: 0
Drifting
Joined: Aug 2010
Posts: 1,704
Likes: 8
if it isn't just a coincidence,and you lost the reverse becouse of a mechanical issue,i would try a fluid flush/cleaner...Now you'r stucked with no reverse,next step is a rebuild ,"extrema ratio" try the clener/flushing way...good luck bro
Le Mans Master
Joined: Dec 2003
Posts: 5,768
Likes: 33
From: Van Steel Corvettes
St. Jude Donor '12-'13
From what I've recently learned in my resent trans rebuild (besides dropping a trans in the driveway sucks), I'd say the reverse input drum probably needs to be replaced. AKA, rebuild time.
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Le Mans Master
Joined: Dec 2003
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From: Van Steel Corvettes
St. Jude Donor '12-'13
Race Director
Joined: Apr 2002
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From: Anaheim CA
Hope you can help. I have an 84 automatic that was shifting fine. I was trying to stop a leak and added a 8 oz bottle of stop leak to a full transmission. Almost immediately I lost reverse. Still have all forward gears. I tried removing a quart of fluid but still no reverse. Will draining all of the fluid out and refilling get reverse back? Thanks
I would drop the pan and replace the filter. That will give you the opportunity to look at the magnet in the pan and see what's stuck to it. Open up the filter and see what's inside. Doing those things will give you a much better idea of the condition of your trans and help you decide what to do afterwards.
