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Old May 22nd, 2019, 10:50 PM
James James is offline
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Join Date: Jun 2013
Location: Greer, SC
Truck: 1964 GMC 1500 2wd
Age: 69
Posts: 432
Rep Power: 200
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Default Re: Hydramatic Repairs

Sound like the overrunning clutch in the torque converter not working. This happen to me. It was very slow to get started. Once it was moving about 30 mph it operated properly.

Inside the torque converter the overrunning clutch (sprag clutch) outer ring had came loose from the housing. You lose torque multiplication and it is now just a fluid coupler (very inefficient).
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