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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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10-13-2012, 10:38 AM | #101 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Ezgo Marathon...Kinda
Quote:
I believe you are using an analog Ohmmeter, so there should be a 0 (zero) at one side and figure 8 laying on its side (Infinity symbol) at the other. When the test leads are not attached to the wirews to the Potentiometer, it should read Infinity. When you attach the leads to the potentiometer wires (they must be disconnected from controller), the needle should deflect towards 0 or stay at Infinity. If the needle deflects past infinity, there is voltage on the wires you are attaching the ohmmeter leads to. Are you sure you are measuring the ohms on the correct set of wires? Here is a drawing of the controller terminals, it is shown upside down on the schematic. All three wires with the small push on connectors go to the pot box. The top one in the drawing goes to the microswitch. The other two go to the pot and may alos be connected to a microswitch on the F/R assembly. --------- Also, if the voltage between M- and B- decreases when the pedal is pushed, the potentiometer is working. ----------- Have you measured the battery pack voltage when the pedal is pushed? That will tell us if the batteries are failing under load. |
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10-13-2012, 12:38 PM | #102 |
Gone Wild
Join Date: Feb 2010
Posts: 551
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Re: Ezgo Marathon...Kinda
I will go do that right now.
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10-13-2012, 12:51 PM | #103 |
Gone Wild
Join Date: Feb 2010
Posts: 551
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Re: Ezgo Marathon...Kinda
Yes I am using an analog meter. My total pack voltage is exactly 40 Volts. When I jack up the cart and floor it my total pack voltage is 40v exactly. That tests out great. What should I try next?
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10-13-2012, 12:55 PM | #104 |
Gone Wild
Join Date: Feb 2010
Posts: 551
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Re: Ezgo Marathon...Kinda
Ok let me go retry testing the pot box again. I know I have the right wires they are coming right out of the pot. One is white and 1 is black.
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10-13-2012, 01:24 PM | #105 |
Gone Wild
Join Date: Feb 2010
Posts: 551
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Re: Ezgo Marathon...Kinda
Ok, I have some information for you. On the left side of the tester is the infinity symbol. All the way to the right is 0 omhs. When I hook my tester up to the black/white wire coming from the pot box it starts at the infinity symbol and slowly moves down to zero on the other end. When I push the gas pedal the meter stops moving and when I let go of the pedal it continues to move down to zero.
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10-13-2012, 01:25 PM | #106 |
Gone Wild
Join Date: Feb 2010
Posts: 551
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Re: Ezgo Marathon...Kinda
By the way I got the ezgo txt powerwise charger working with my marathon. It works great
Matt |
10-13-2012, 08:22 PM | #107 | |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,358
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Re: Ezgo Marathon...Kinda
Quote:
Harbor freight sells DVMs for as little as $7 |
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10-13-2012, 08:34 PM | #108 |
Gone Wild
Join Date: Feb 2010
Posts: 551
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Re: Ezgo Marathon...Kinda
I think when this Cart Is fixed I will get a digital Multimeter. To make it easy when I test my pot Box it just drops right down to 0 OHMS.
I'm going to make a guess and say that is bad. Everything else on the Cart tests out Great, Controller, Motor, F&R, Solenoid, Microswitches, Everything is wired Nice and tight, No Corrosion, all 4 gauge wiring, No heat ANYWHERE on the cart. It did this same thing back on August 1st. I let it sit for 2 Months drove it 3 days ago went great, Thursday afternoon sluggish again. I think what might have happened is all the power drained out of the Pot/Controller and I was able to drive it temporally. I unplugged the Pot hopping the power will drain out of it and it will run tomorrow. IDK we will see. But scotty, does 0 OHMs with or without pressing the pedal sound like a bad pot to you? |
10-13-2012, 09:17 PM | #109 |
steeplejack x
Join Date: Jan 2007
Location: Republic of Texas
Posts: 3,382
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Re: Ezgo Marathon...Kinda
Probably a long shot and just shooting from the hip here, but by chance does your meter have more than two places to insert the test leads?
Reason is I've seen meters (especially analog and very cheap digitals) where you have to change one of the leads to measure/test continuity. |
10-13-2012, 09:35 PM | #110 | |
Astronautilator
Join Date: Sep 2011
Location: North Idaho
Posts: 1,494
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Re: Ezgo Marathon...Kinda
Quote:
With your pedal at rest as in zero throttle, you should be reading 0 ohms on the meter. As you slowly push on the pedal your meter should slowly and steadily climb up towards 5-6k Ohms. Then after releasing pressure on the pedal your meter should drop back to 0 |
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ezgo, marathon |
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