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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV.



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Old 09-03-2018, 10:26 AM   #1
tlfinn
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Default Is this even possible?

Ok I just put new brushes in the motor bc it was running hot and smelling "electrical" (also one brush was actually burnt out). I put it all back together in the cart....full battery pack and the cart goes...but not fast at all....is it possible the speed controller could be bad but still allowing the cart to move?
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Old 09-03-2018, 10:33 AM   #2
NoleFan4Ever
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Default Re: Is this even possible?

It surely could be low on the output, but it could be the potentiometer or other things....

What year and type of cart (Series or Sepex)?
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Old 09-03-2018, 10:38 AM   #3
tlfinn
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Default Re: Is this even possible?

its an old Melex...and I didnt realize i posted on the Club car site....my club car cart is running great but that me and mamas ride ...this melex is the kids HAHAHAHA...
just wondering what other tests i could run to figure it out
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Old 09-03-2018, 10:48 AM   #4
NoleFan4Ever
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Default Re: Is this even possible?

I have not messed with a Melex I am just not sure....
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Old 09-03-2018, 11:16 AM   #5
JohnnieB
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Default Re: Is this even possible?

Give the new brushes some time to break in. No hard acceleration and drive at various speed for the first ten miles or so.

Are any of the high current cables or connections getting hot?
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Old 09-03-2018, 11:23 AM   #6
tlfinn
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Default Re: Is this even possible?

no I have been checking to see if the motor/cables were getting hot...but everything feels relatively cool..the cart is moving but just not with any speed
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Old 09-03-2018, 11:32 AM   #7
rib33024
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Default Re: Is this even possible?

Quote:
Originally Posted by tlfinn View Post
its an old Melex...and I didnt realize i posted on the Club car site....
I moved this thread to the EZGO forum



And at 36 volts is time to stop driving the cart and charge it
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Old 09-03-2018, 11:34 AM   #8
tlfinn
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Default Re: Is this even possible?

the motor making a little clicking noise....not sure if thats the new brushes or what..I have checked the connections on the motor before I reinstalled it...i have continuity where Im supposed to ...
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Old 09-03-2018, 11:42 AM   #9
JohnnieB
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Default Re: Is this even possible?

Universal troubleshooting:
Raise rear tire off ground and put cart on jackstands.
Connect DVM between B- and M- terminals on controller.
Press pedal just far enough to make solenoid click.
You should read full battery pack voltage. (38.2V if fully charged)

If you don't get full pack voltage, trace out the high current cables, find the missing voltage and fix whatever is causing the voltage loss.

If you do get full pack voltage, slowly press pedal to floor and voltage ought to smoothly decrease to 0V.
If the voltage doesn't go to 0V (or very close to it), check the throttle input to the controller.

If the voltage doesn't decrease all the way to 0V and the throttle input is good, the controller is bad.
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Old 09-03-2018, 12:11 PM   #10
tlfinn
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Default Re: Is this even possible?

ok so full pack was 38.4 on the batteries....
key on..voltage reading on big posts solenoid 37.4 with pedal NOT PRESSED
key on.. in forward...b- to m- press till solenoid click..NOW THE CART WONT GO...

is my solenoid stuck open?
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