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Electric Yamaha Electric Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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04-08-2010, 02:51 AM | #1 |
Not Yet Wild
Join Date: Apr 2010
Posts: 3
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My cart has no power up even the smallest of hills
I just purchased an older Yamaha Electric golf cart. It starts off real slow and has problems going up the slightest of grades or hills. I can't even make it up my drive way. I checked all the batteries and they all hold at least 6 volts when charged. I tested the volts going into the motor and with the pedal pushed in slightly it gets about 17 from one terminal and 10 from the other on the motor itself. When pushing the pedal all the way down it drops to 5 and 5. I don't know much about golf carts. Is the motor shot or is there something i can do to fix or test??
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04-08-2010, 09:12 AM | #2 |
Gone Wild
Join Date: Feb 2009
Location: Not sure yet
Posts: 500
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Re: My cart has no power up even the smallest of hills
Forget how you are testing right now, and test the batteries under a load, post those numbers. What model Yamaha?
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04-08-2010, 09:38 AM | #3 |
Not your usual outlaw
Join Date: Oct 2008
Location: Near Lake Geneva, WI
Posts: 20,054
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Re: My cart has no power up even the smallest of hills
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04-08-2010, 02:54 PM | #4 |
Not Yet Wild
Join Date: Apr 2010
Posts: 3
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Re: My cart has no power up even the smallest of hills
The Model number on the engine is MT360-06. The actual cart looks like its about 10 years old. It has all the bells and whistles, horn, blinkers, brakes lights, hazards, radio, cig lighter. I thought I did test the load but maybe not??? How do i do that?? I checked each one of the cables going to the coil and it seems they are all transfering power. About 5 volts or more threw each cable. It really looks like the power is making it to the motor. I could be wrong? Any advice?
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04-08-2010, 03:21 PM | #5 |
......................
Join Date: Apr 2009
Location: FT Lauderdale FL.
Posts: 16,416
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Re: My cart has no power up even the smallest of hills
Welcome to bgw
take a readind of the whole battery pack-- POS -- bat #1 and NEG--bat #6--Where your cables hook up to your batteries from the charger, it should be over 36V |
04-08-2010, 03:45 PM | #6 |
Not Yet Wild
Join Date: Apr 2010
Posts: 3
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Re: My cart has no power up even the smallest of hills
I took a reading of the whole battery pack it reads over 36 volts. 36.7. I'm gonna replace all the wires with a 4 gauge wire, but I really think the motor is getting the power, that is if when i test the load, (push the pedal all the way down) it is normal to see the numbers drop to 5 volts and 5 volts to the terminals on the motor. I really hope its not the motor. Is this a sign that the motor is shot? Or would it not move at all?
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04-08-2010, 03:58 PM | #7 |
ZONE FREE ZONE
Join Date: Nov 2009
Location: lauderdale by the sea
Posts: 571
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Re: My cart has no power up even the smallest of hills
your batts are junk. get a full charge on them and wait about an hour then check them. leave the meeter hooked up and check it while moving( this is under load) let us know what those readings are.
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04-08-2010, 07:21 PM | #8 |
Sometime's............
Join Date: Oct 2007
Location: Tacoma Washington
Posts: 11,874
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Re: My cart has no power up even the smallest of hills
Another way to simulate testing under load, as mentioned before, hook your volt meter to the battery set (36 volt positive and negative posts), jack up the rear of the car , push on the pedal and look for battery drop. You can also aply the brake and really get a load reading (just like driving the car). I would say you have a battery/batteries problem. How old are the batteries? Date codes are stamped into the lead terminals ,will have a letter and number for the month and year manufactured. What brand are the batteries? Just one bad battery can cause this and other driveability problems. Good luck on your test results.
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05-04-2010, 05:14 PM | #9 |
Not Yet Wild
Join Date: Apr 2009
Posts: 65
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Re: My cart has no power up even the smallest of hills
fully charged should be at 42v charge drive or try to then re ck every batt individually,should be over 6 v if under its bad, u have to ck each one by its self to find the bad one
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04-29-2020, 04:19 PM | #10 |
Not Yet Wild
Join Date: Apr 2020
Posts: 7
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Re: My cart has no power up even the smallest of hills
How do you test the solenoids?
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loss, power, slow start uphills, slow uphill |
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