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Electric Club Car Electric DS, and Precedent golf cars |
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03-04-2017, 07:18 PM | #1 |
Gone Wild
Join Date: Dec 2010
Location: Orlando
Posts: 382
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Precedent low erratic speed not MCOR issue
I have a friend with an 07 precedent that had a bad mcor. Had gen 1 pedal group so switched to new one with mcor 4. However cart is still jerky at low speeds. Hooked up handheld and get smooth 0-100% on monitor but cart won't move until 44% throttle sometimes. Tried new mcor with same result. Also changed out speed sensor, solenoid shows 0 ohms when closed and I can't find anything else wrong so I am leaning toward controller but am wondering if there is a way to test to verify for sure?
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03-04-2017, 10:40 PM | #2 |
Gone Wild
Join Date: Jun 2014
Location: Concord, NC
Posts: 354
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Re: Precedent low erratic speed not MCOR issue
First we need to know, stock controller? Stock motor?, how old are the batteries and have you check voltage of the batteries? Have there been any mod's done to the cart? That will help on trying to figure what could be wrong.
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03-05-2017, 10:38 AM | #3 |
Gone Wild
Join Date: Dec 2010
Location: Orlando
Posts: 382
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Re: Precedent low erratic speed not MCOR issue
Stock everything 12v batteries pass discharge test
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03-06-2017, 03:28 PM | #4 |
revolutiongolfcars.com
Join Date: Mar 2010
Location: Golf Car Capital of The World... Augusta, Georgia
Posts: 10,224
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Re: Precedent low erratic speed not MCOR issue
The controller is definitely "stock" as in a 1510 controller? I've seen these symptoms numerous times when people replace the controller with a stock 1515 controller. The controllers look the same and mount the same, but they're not the same. The throttle is totally different. I've also seen people swap in used E-Z-GO TXT 48 volt Curtis controllers into their Club Cars and have issues as well. Need to know if the controller is indeed the original stock 1510 controller. If you've got a 1515 in it, don't worry. I can tell you how to make it work.
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03-06-2017, 05:03 PM | #5 |
Gone Wild
Join Date: Dec 2010
Location: Orlando
Posts: 382
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Re: Precedent low erratic speed not MCOR issue
It has a 1510a-5250. I have a refurb 1510a-5251 that I was going to try if needed.
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03-06-2017, 05:32 PM | #6 |
revolutiongolfcars.com
Join Date: Mar 2010
Location: Golf Car Capital of The World... Augusta, Georgia
Posts: 10,224
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Re: Precedent low erratic speed not MCOR issue
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03-06-2017, 06:24 PM | #7 |
Gone Wild
Join Date: Dec 2010
Location: Orlando
Posts: 382
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Re: Precedent low erratic speed not MCOR issue
So the 5251 controller is the same as the 5250? Thanks Dave
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03-06-2017, 08:29 PM | #8 |
revolutiongolfcars.com
Join Date: Mar 2010
Location: Golf Car Capital of The World... Augusta, Georgia
Posts: 10,224
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Re: Precedent low erratic speed not MCOR issue
It's got a little bit different software, but it's for the same application.
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03-06-2017, 08:55 PM | #9 |
Gone Wild
Join Date: Sep 2015
Location: Cincinnati, Ohio
Posts: 1,354
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Re: Precedent low erratic speed not MCOR issue
I think some people around here are 5150....
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03-07-2017, 05:56 PM | #10 |
Gone Wild
Join Date: Dec 2010
Location: Orlando
Posts: 382
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Re: Precedent low erratic speed not MCOR issue
Dave I installed new 1510a-5251 and cart acts the same just like a bad mcor. At low throttle range it is jerky and sometimes motor won't even react until about 40%. Could it be a bad motor? Once I get up above 60% throttle smooths out but anything less causes issues. I am at a loss at this point for ideas!
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