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Electric Yamaha Electric Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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05-19-2017, 12:23 PM | #1 |
Not Yet Wild
Join Date: Sep 2016
Location: Jefferson City, TN
Posts: 26
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yamaha being jerking and being sporadic
ok guys I have a g29 Yamaha 07. The cart has a newer controller and batteries installed about 1 year ago. the problem I'm having is the cart will run sometimes but not all the time. when it does run, it jerks and runs sporadic. I thought for sure it was the throttle position sensor, but it wasn't. Then changed out the motor speed sensor and that didn't work either. Any ideas? I usually don't mess with Yamaha and don't have any manuals on them.
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05-19-2017, 01:11 PM | #2 |
Not Yet Wild
Join Date: Sep 2016
Location: Jefferson City, TN
Posts: 26
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Re: yamaha being jerking and being sporadic
I also noticed when it doesn't run, if I jack it up and spin the rear wheels at will start to run and kick on and off.
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05-19-2017, 02:43 PM | #3 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: yamaha being jerking and being sporadic
Motor. Pull it & check the brushes & commutator.
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04-21-2018, 01:01 PM | #4 |
Not Yet Wild
Join Date: Sep 2016
Location: Jefferson City, TN
Posts: 26
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Re: yamaha being jerking and being sporadic
i know this is an old post but it did end up being the brushes in the motor. thank you
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06-06-2018, 06:19 PM | #5 |
Not Yet Wild
Join Date: May 2015
Posts: 31
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Re: yamaha being jerking and being sporadic
1 of our consignment customers has brought me her 2009 Yamaha cart. its doing something similar. sometimes runs fine, but I may walk out there right now put it in rev and it just jerk. like going in and out of gear. next time be fine. same goes for fwd. was hoping maybe something simple like the switch or a connection issue. I will try and pull the motor this weekend and check it. if it is the brushes are they replaceable or is it time for a new motor. this 1 looks to be a replacement.
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06-15-2018, 08:34 PM | #6 |
Not Yet Wild
Join Date: May 2016
Posts: 8
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Re: yamaha being jerking and being sporadic
I’m wondering the same thing. My 2012 Drive started jerking when accelerating from a stand still, as well putting out a grind or stutter when rolling slowly to a stop. This behavior began two weeks ago. Today, I drove it down the street, and power/speed seemed to be down about 75%. Then, after about a quarter mile it began jerking, stuttering and eventually stopped moving altogether. All the while, the digital battery gauge was jumping all over the place. Any thoughts?
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10-09-2020, 10:59 AM | #7 |
Not Yet Wild
Join Date: Dec 2019
Posts: 2
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Re: yamaha being jerking and being sporadic
I have the same issue with my 2014. Anyone figure out what this is? Same symptoms as TX above
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10-09-2020, 11:00 AM | #8 |
Not Yet Wild
Join Date: Dec 2019
Posts: 2
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Re: yamaha being jerking and being sporadic
Hello. I was wondering if you were able to diagnose the jerking/loss of power/slow grind you mentioned in a post. I am experiencing all those with my 2014 Yamaha electric cart.
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10-09-2020, 11:20 AM | #9 |
Gone Wild
Join Date: Sep 2010
Location: Florida
Posts: 1,895
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Re: yamaha being jerking and being sporadic
This sounds like a motor brush issue...an easy way to check is when it stops running...tap on the motor cap(end of motor) slightly with a hammer...then try to drive again...if it now moves whereas it didn't before points directly to brushes in motor...you can also try pressing accelerator down a little while rolling cart forward and if it then starts moving or trying to move that also points at motor brushes...and YES they are replaceable...
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10-10-2020, 09:26 PM | #10 |
Getting Wild
Join Date: Apr 2020
Location: Wisconsin
Posts: 82
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Re: yamaha being jerking and being sporadic
I had a similar that I chanced for a while and it ended up being my brushes.
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