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| Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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Thread Tools | Display Modes |
08-28-2018, 08:13 PM
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#1 |
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Not Yet Wild
Join Date: May 2018
Posts: 13
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1990 marathon no go
New to me 1990 marathon. unknown history. Had batteries when I got it, all were dead. Replaced rusted out battery trays. Got all new batteries. Looked up battery wiring diagram. made new cables (2gauge). connected everything as per diagram. Key on and in forward or reverse I just get a slight bump then nothing. Like the controller pre-charge being spent? I looked at the solenoid and most I have seen have a diode and/or a resistor, Mine does not. here are a few pics. If you can see anything wired wrong or any suggestions as to the problems I would be grateful thanx cory
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08-28-2018, 08:14 PM
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#2 |
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Not Yet Wild
Join Date: May 2018
Posts: 13
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Re: 1990 marathon no go
some more pics
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08-29-2018, 06:50 PM
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#3 |
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Not Yet Wild
Join Date: May 2018
Posts: 13
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Re: 1990 marathon no go
OK some more trouble shooting today. I have pack voltage thru key switch/forward neutral reverse micro switch/throttle micro switch to controller blue wire. Also have pack voltage Thru solenoid (large terminals) when key on in F or R and throttle pressed. Solenoid clicks. Also have around 700 ohms (just when the micro switch clicks) to 5500 ohms going to the controller from the throttle pot in forward and about half that when in Reverse. Bad controller?
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08-29-2018, 07:14 PM
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#4 |
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Not Yet Wild
Join Date: Aug 2018
Location: Summerville SC
Posts: 2
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Re: 1990 marathon no go
Hi Cory, I just joined this site and have a 1994 ez go cart that looks a lot like yours internally. I’ve been replacing parts as I follow the troubleshooting instructions online but still have had no luck getting it to go. Hopefully someone can offer some good advice that might help both of us. I’ve replaced my diode that came in a pack of 4 so if you need one let me know and i can send one to you. I have no need for the 3 extra diodes in the pack.
Good Luck, Jody Faye |
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08-30-2018, 10:59 AM
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#5 |
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Gone Wild
Join Date: Sep 2017
Posts: 690
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Re: 1990 marathon no go
Welcome to the site!
Verify your batteries are fully charged, as a pack and individually (even though they are brand new) see attached state of charge chart. There are alot of great people on this site and the majority have more knowledge than I and will offer any help they can.  |
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08-30-2018, 03:15 PM
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#6 |
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Not Yet Wild
Join Date: May 2018
Posts: 13
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Re: 1990 marathon no go
yes batteries are fully charged at 38v
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08-31-2018, 04:28 PM
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#7 |
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Not Yet Wild
Join Date: May 2018
Posts: 13
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Re: 1990 marathon no go
Rechecked all the wiring, all correct from the diagram I have except the resistor and diode. unhooked the wires from the motor and tested the motor from a procedure found on this site...thanx. Motor tested good. Everything is pointing to the Curtis controller being bad. I'm gonna look for a used one locally.
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09-20-2018, 07:08 AM
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#8 |
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Not Yet Wild
Join Date: May 2018
Posts: 13
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Re: 1990 marathon no go
got my Curtis controller rebuilt and now the cart runs like a champ!
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09-20-2018, 07:27 AM
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#9 |
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Gone Wild
 Join Date: Jun 2017
Location: Savannah, GA
Posts: 6,539
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Re: 1990 marathon no go
Great [emoji106][emoji2532]
Club Car DS driver’s club #59 |
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