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



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Old 04-07-2010, 10:33 AM   #11
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Default Re: 1992 EZGO Marathon Electric Cart

Something ain't right here. 44.9v is too high for a 36v pack at rest.
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Old 04-07-2010, 03:48 PM   #12
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Default Re: 1992 EZGO Marathon Electric Cart

That reading is off the charger after a full charge. Didn't have my multimeter handy last night.
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Old 04-07-2010, 05:45 PM   #13
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Default Re: 1992 EZGO Marathon Electric Cart

You're probably just reading the surface charge. Let the pack settle for a few hours then take another reading. My guess is they'll be ~38-39v.

The pot is easy to check. Just check the resistance on the black and white wires from the pot going to the controller.
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Old 04-07-2010, 07:38 PM   #14
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Default Re: 1992 EZGO Marathon Electric Cart

Quote:
Originally Posted by pggroves View Post
You're probably just reading the surface charge. Let the pack settle for a few hours then take another reading. My guess is they'll be ~38-39v.

The pot is easy to check. Just check the resistance on the black and white wires from the pot going to the controller.
Good advise here by PG. Before you start trying to make the fine adjustment to tune the POT make sure it isn't defective. Pull the two wires off the the top of the controller coming from the POT. (They should be the spade connectors to post's 2 & 3) You should see no movement on the OHM meter when depressing the accelerator pedal till the hill brake is released. Then a nice steady rise from 0 to 5K as pedal reaches near full travel. If your POT is bad you can replace the rotary switch inside the POT box for like $10.
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Old 04-08-2010, 01:02 PM   #15
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Default Re: 1992 EZGO Marathon Electric Cart

The POT seems to be okay and moves from 0-5K as the pedal is depressed. Under load it still cuts out though at full throttle. I have already ordered a new POT box so I will replace anyway.

Could the diode on the solenoid be a contributor to this issue? Mine is missing and I ordered that as well. Does the diode go across the Big posts or the Small posts?
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Old 04-08-2010, 01:05 PM   #16
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Default Re: 1992 EZGO Marathon Electric Cart

Voltage is reading 39V on the pack.
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Old 04-09-2010, 10:19 AM   #17
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Default Re: 1992 EZGO Marathon Electric Cart

Quote:
Originally Posted by mhebb View Post
The POT seems to be okay and moves from 0-5K as the pedal is depressed. Under load it still cuts out though at full throttle. I have already ordered a new POT box so I will replace anyway.

Could the diode on the solenoid be a contributor to this issue? Mine is missing and I ordered that as well. Does the diode go across the Big posts or the Small posts?
The diode prevents flyback voltage from getting to the controller. Look about half way down here: Basic Ezgo electric golf cart wiring and manuals
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Old 04-09-2010, 12:55 PM   #18
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Default Re: 1992 EZGO Marathon Electric Cart

Can't access the link. this is all I see

Wiring on late 70s resistor cart


Wiring for 83-93 resistor cart


Speed control board/Accelerator switch for 83-93 resistor cart (also in the above diagram between the batteries)


Non-DCS Golf Cart Wiring


Non-DCS Golf Cart controller


DCS Golf Cart wiring


DCS Golf Cart Controller


PDS Golf Cart wiring


PDS Golf Cart Controller


PDS Speed Chip


Pedal box, ITS switch for controller cart
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Old 04-09-2010, 09:17 PM   #19
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Default Re: 1992 EZGO Marathon Electric Cart

Quote:
Originally Posted by mhebb View Post
Can't access the link. this is all I see

Wiring on late 70s resistor cart


Wiring for 83-93 resistor cart


Speed control board/Accelerator switch for 83-93 resistor cart (also in the above diagram between the batteries)


Non-DCS Golf Cart Wiring


Non-DCS Golf Cart controller


DCS Golf Cart wiring


DCS Golf Cart Controller


PDS Golf Cart wiring


PDS Golf Cart Controller


PDS Speed Chip


Pedal box, ITS switch for controller cart
It's the one I highlighted. Sorry, I don't do computers.
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Old 04-09-2010, 09:22 PM   #20
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Default Re: 1992 EZGO Marathon Electric Cart

The link works for me


If you dont see any pics check your computer you must have a block on pics





Quote:
Originally Posted by mhebb View Post
Can't access the link. this is all I see

Wiring on late 70s resistor cart


Wiring for 83-93 resistor cart


Speed control board/Accelerator switch for 83-93 resistor cart (also in the above diagram between the batteries)


Non-DCS Golf Cart Wiring


Non-DCS Golf Cart controller


DCS Golf Cart wiring


DCS Golf Cart Controller


PDS Golf Cart wiring


PDS Golf Cart Controller


PDS Speed Chip


Pedal box, ITS switch for controller cart
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