ebike Motor stuttering and jerking from time to time

Chaser

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Aug 17, 2018
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My ebike motor is stuttering and jerking, I'm wondering if there is any way to tell if it is the motor or the motor controller causing this problem?
 

Edwardo

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Sep 17, 2018
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It could be a loss of connection. I have seen an ebike bottle battery that broke internally and caused the same problem whenever the connection was lost.
 

BobW

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Oct 28, 2020
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Check that the brake lever isn't cutting off power to the controller, or any loose connectors. When does this happen? If when you hit a bump in the road, or anything else.
 
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