If it is locked in reverse, that is an internal failure.
Most likely you will need the transmission to be removed and inspected. It most likely will result in replacement with either a rebuilt unit or a used unit.
Roy
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Sunday, February 23rd, 2020 AT 2:52 PM
CARADIODOC
MECHANIC
33,871 POSTS
Hi guys. I thought this too, but wouldn't the torque converter still do its thing and let the engine idle? The torque converter would have to be locked up to snub the engine.
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Sunday, February 23rd, 2020 AT 2:57 PM
RMARCE
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The van runs and shifts when in drive.
When you select reverse it attempts to back up then it locks up and stalls the engine.
Could it be the torque converter locking.
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Sunday, February 23rd, 2020 AT 4:09 PM
ASEMASTER6371
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52,797 POSTS
It could be but if the converter was bad, it would also do it in the drive.
I still think you have something internal locking up in reverse. The forward clutch pack may be the issue.
Roy
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Sunday, February 23rd, 2020 AT 4:39 PM
RMARCE
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Is there a way to remove the power to the locking converter without going into the transmission?
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Sunday, February 23rd, 2020 AT 4:52 PM
ASEMASTER6371
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52,797 POSTS
Most likely the issue is not the converter but the seized clutches. Forward and reverse are trying to work together and it will not work.
No, there is not. Besides, I doubt it is the converter.