|
|
|||||||
| Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
  |
|
|
Thread Tools | Display Modes |
12-27-2015, 06:25 PM
|
#1 |
|
Not Yet Wild
Join Date: Dec 2015
Location: VA
Posts: 45
|
91 EzGo Marathon Controller bad?
I've read through a bunch of threads including the FAQ section looking for answers to what is causing my cart to move very slowly/not at all up any slight incline. Tried to follow a few steps and have some info to share hoping to get some ideas on next steps. My charger is working and when fully charged my batteries are at 38+ volts. The solenoid clicks when the pedal is is pushed. The cart has better torque in reverse, in forward there is a delay when you push on the pedal and the torque picks up slowly. I've tested the voltage to M-, B+ and B- both while up on jacks with no load, and while moving up an incline under load. Here are the readings:
No Load: M- to B+ =37 volts No Load: M- to B- = 0 volts With load: M- to B+ varies from 15-18 volts and increases as the incline decreases. With load: M- to B-, 0 volts. From what I read it seems it could be the controller, or something in the wiring or connections. All the cables look ok on the outside but if I should be looking at replacing those first I will do that before investing in a controller that might not be the issue. Any suggestion on next steps? Thanks. |
|
|
 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 |
|
|
12-27-2015, 06:57 PM
|
#2 |
|
Happy Carting
 Join Date: Dec 2007
Location: Southern California
Posts: 73,419
|
Re: 91 EzGo Marathon Controller bad?
Pu the meter on the pack mains. What does the pack voltage drop to when the cart slows drastically?
|
|
|
|
|
12-28-2015, 09:01 AM
|
#3 |
|
Not Yet Wild
Join Date: Dec 2015
Location: VA
Posts: 45
|
Re: 91 EzGo Marathon Controller bad?
before moving it is at 38v, when moving under load up hill drops to 37-36.8v. Thanks.
|
|
|
|
|
12-28-2015, 07:27 PM
|
#4 |
|
Not Yet Wild
Join Date: Dec 2015
Location: VA
Posts: 45
|
Re: 91 EzGo Marathon Controller bad?
Just realized my last post was incomplete.
No load on M- and B+ voltage is 37. With load going up slight incline drops to 15-18 volts No load M- and B+ voltage drops to 0. With load drops to 0. Any help is appreciated. |
|
|
|
|
12-28-2015, 07:28 PM
|
#5 |
|
Not Yet Wild
Join Date: Dec 2015
Location: VA
Posts: 45
|
Re: 91 EzGo Marathon Controller bad?
Voltage at main terminal was 38 and barely drops under load to 37.
|
|
|
|
|
12-29-2015, 06:50 PM
|
#6 |
|
Not Yet Wild
Join Date: Dec 2015
Location: VA
Posts: 45
|
Re: 91 EzGo Marathon Controller bad?
Still looking for any help and have more info. I tested the peditidimeter and started at 0 and went to 6.4 ohms. I adjusted the linkage so it is now 0 to 5k which I think which is within spec. Didn't help with the slow acceleration issue.
What voltage should be present at the FNR switch. Standing still I'm getting about 25v at each terminal. Thanks. |
|
|
|
|
|
||||||
|
|
Similar Threads
|
||||
| Thread | Forum | |||
| 1993 ezgo marathon controller cart won't move | Electric EZGO | |||
| Ezgo Marathon Resistor to Controller conversion kit | Design Center | |||
| 2003 EZGO motor & controller swap on a 87 Marathon | Electric EZGO | |||
| EZGO Marathon Controller | Golf Carts and Parts | |||
| Ezgo Controller 1991 Marathon | Electric EZGO | |||
Linear Mode
