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Electric Yamaha Electric Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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03-15-2019, 11:05 PM | #1 |
Not Yet Wild
Join Date: Nov 2018
Posts: 22
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Cart runs but shutters
I mainly work on club cars and ezgos but had a Yamaha come in. It will runs somewhat but it surges and shakes when depressing the pedal. It seems to go better in revere but still surges. It’s a 2008 48 volt with new batteries
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03-16-2019, 09:26 AM | #2 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,358
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Re: Cart runs but shutters
Sounds like a power supply problem
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03-16-2019, 12:45 PM | #3 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: Cart runs but shutters
I would pull that motor and check it out. If the motor is the problem, and is ignored, it will soon be irreparable. (By irreparable, I mean not cost effective to repair).
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03-16-2019, 12:49 PM | #4 |
Not Yet Wild
Join Date: Nov 2018
Posts: 22
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Re: Cart runs but shutters
Do they have an mcor or speed sensor like club cars and ezgos or a throttle sensor of some kind?
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03-16-2019, 12:50 PM | #5 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: Cart runs but shutters
0-5v throttle, but your readings will likely be "0.4v to 4.7v throttle", that's ok. Throttle sensor failure on YDRE is incredibly uncommon, I have replaced probably 5 since 2007.
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03-16-2019, 04:21 PM | #6 |
Not Yet Wild
Join Date: Mar 2019
Location: Alabama
Posts: 20
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Re: Cart runs but shutters
Sounds like something I just went through with a 2013 Drive - Motor was bad - instead of rebuilding or replacing with stock I upgraded to Riot Kit - when I pulled the original Hitachi motor, sure enough it was burned up
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03-23-2019, 12:01 AM | #7 |
Gone Wild
Join Date: May 2016
Location: Central Alabama
Posts: 1,042
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Re: Cart runs but shutters
Had a similar issue turned out to be worn and/or stuck brushes in motor. Check and see if any of the terminal connections on the motor are getting very hot.
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