|
Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
|
Thread Tools | Display Modes |
10-31-2020, 06:55 PM | #1 |
Not Yet Wild
Join Date: Jun 2020
Location: Albemarle NC
Posts: 50
|
Marathon dies at wot
Just bought a 1991 ezgo marathon that has been sitting for a while. Installed brand new batteries and to my surprise it actually runs pretty good. The issue is at wide open throttle it dies.... as long as I keep it about 3/4 throttle it runs great! Any ideas??
|
Today | |
Sponsored Links
__________________
This advertising will not be shown in this way to registered members. Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum |
|
10-31-2020, 07:14 PM | #2 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
|
Re: Marathon dies at wot
Is it a resistor type drive or a controller type drive?
|
10-31-2020, 08:14 PM | #3 |
Not Yet Wild
Join Date: Jun 2020
Location: Albemarle NC
Posts: 50
|
Re: Marathon dies at wot
I’m pretty sure it’s a controller type but will check to be certain.
|
10-31-2020, 10:12 PM | #4 |
Gone Insane
Join Date: Oct 2016
Location: Richmond, VA
Posts: 14,214
|
Re: Marathon dies at wot
JB knows more about these than me, and I'm sure he'll be back sometime.
I would check and make sure the throttle (if a solid state cart) is not going beyond specs. |
11-01-2020, 03:41 PM | #5 |
Not Yet Wild
Join Date: Jun 2020
Location: Albemarle NC
Posts: 50
|
Re: Marathon dies at wot
It is a controller type cart.
|
11-01-2020, 05:20 PM | #6 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
|
Re: Marathon dies at wot
Should be a black and a white wire connected to the controller with push-on spade lugs, those are the throttle wires and are connected to a 0-5KΩ potentiometer. (actually, it is more than that, the sweep used is 0-5KΩ)
Disconnect the black and white wire off the controller and measure between the wires with an Ohmmeter. You should get about 0Ω with pedal up and about 5,000Ω with pedal down. Also, when pedal is slowly pushed to floor, the ohms ought to increase smoothly. If the value goes above about 7,000Ω, the controller will shut down and that may be what is happening. |
11-01-2020, 06:24 PM | #7 |
Not Yet Wild
Join Date: Jun 2020
Location: Albemarle NC
Posts: 50
|
Re: Marathon dies at wot
Thanks johnnieb I will check tomorrow evening and report back.
|
11-02-2020, 03:22 PM | #8 |
Not Yet Wild
Join Date: Jun 2020
Location: Albemarle NC
Posts: 50
|
Re: Marathon dies at wot
Between the white and black it ohms 0 with peddle up and it does indeed go above 7000 at WOT. What does this tell me??
|
11-02-2020, 04:34 PM | #9 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
|
Re: Marathon dies at wot
Quote:
Since it is 0Ω at pedal up, it may have the wrong potentiometer installed, or it is dirty. Try some spray cleaner on the pot and work the pedal up and down numerous times. May have to replace the pot-box assembly. I'm not all that familiar with pot-box throttles, maybe someone more knowledgeable will chime in. |
|
|
Thread Tools | |
Display Modes | |
|
Similar Threads | ||||
Thread | Forum | |||
87 ez go marathon gas suddenly dies. | Gas EZGO | |||
Marathon Dies | Gas EZGO | |||
1990 Marathon goes like mad and dies | Electric EZGO | |||
91 Marathon dies going uphill | Electric EZGO | |||
88 Marathon EZGO uns & Dies | Gas EZGO |