lifted club cars - lifted ezgo
Home FAQDonate Who's Online
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric Club Car
Electric Club Car Electric DS, and Precedent golf cars



Post New Thread  Reply
Thread Tools Display Modes
Unread 12-31-2015, 09:26 AM   #41
Gone Wild
 
Sergio's Avatar
Club Car
 
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 4,561
Default Re: Upgraded Controller & Sol... Problem now

As I had indicated on my annotated image, Black and White colors are interchangeable depending on the MCOR harness.

You need to do a few tests.

Resistance tests are performed on the MCOR pins that correspond to the wire colors:
From White to Yellow, Pedal Up to Pedal Down = 6.8kΩ-1kΩ
From White to Purple, Pedal Up to Pedal Down = constant 5.8kΩ

Voltage tests are performed on the MCOR 3-pin harness plug:
(key switch ON, FNR in Forward and terminals 1,2,3 connected to the Controller)
From White wire (positive probe) to pack negative = 5v
From pack positive (positive probe) to Purple wire = 48v

Those are all approximate numbers, please post your actual numbers.
Sergio is online now   Reply With Quote
Alt Today
BGW

Golf car forum 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
   
Unread 12-31-2015, 01:34 PM   #42
Not Yet Wild
 
slavoise's Avatar
Club Car
 
Join Date: Sep 2015
Location: So Cal
Posts: 47
Default Re: Upgraded Controller & Sol... Problem now

I purchased a new multimeter and did the following:

White - Yellow:
Pedal Up - 6.15
Pedal 3/4 Down - around 1
Pedal Full Down - 248. (This is the odd part for sure. I made sure to test this multiple times with 2 different multimeters)

White - Purple:
5.87 Up and down.

Voltages checked out right where they should be.


Is it possible that the pedal just goes too far?
slavoise is offline   Reply With Quote
Unread 12-31-2015, 02:18 PM   #43
Gone Wild
 
Sergio's Avatar
Club Car
 
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 4,561
Default Re: Upgraded Controller & Sol... Problem now

Those numbers look great, the new MCOR4 has a lower value for the wiper than the previous generations.

So the cart still seems to run slower at full throttle?

If so, what is the pack voltage at that time?

If You don't have a voltmeter on your dash, just clip or tape the multimeter probes to the battery pack when you take the cart for a ride.

That picture with the battery that has a melted terminal could be a clue that one battery may not be able to perform at 100% throttle.

If the pack voltage is dropping, the speed will go down with it.

Also, don't put the "CA" (acceleration) adjustment too far, it should be less than half.

The motor will try to draw as much current as it can, regardless of what it needs and can use, the excess current allowed by the controller will turn into heat at the motor coils.

A lower "CA" adjustment will allow the current to "ramp up" slowly when You press the pedal so the motor can develop full torque without excess heat.
Sergio is online now   Reply With Quote
Unread 12-31-2015, 06:20 PM   #44
Not Yet Wild
 
slavoise's Avatar
Club Car
 
Join Date: Sep 2015
Location: So Cal
Posts: 47
Default Re: Upgraded Controller & Sol... Problem now

I do have meter on the cart... It never drops when using throttle. I also went and plugged my multimeter directly into the meter instead and same results.

I did realize that the carts throttle position that starts to "lose" power is anything past half way... Also anywhere from 1% to 50% of the pedal down the cart is "going full speed."

I honestly don't remember having this problem before changing the controller and the solenoid. Could I have mixed up wires or just a "bad" controller?
slavoise is offline   Reply With Quote
Unread 12-31-2015, 06:42 PM   #45
Not Yet Wild
 
slavoise's Avatar
Club Car
 
Join Date: Sep 2015
Location: So Cal
Posts: 47
Default Re: Upgraded Controller & Sol... Problem now

I just realized that any pressure on the throttle under say 50% will give me 100% power. Even when I press only maybe 2% down its going all or nothing.
slavoise is offline   Reply With Quote
Unread 12-31-2015, 07:07 PM   #46
Not Yet Wild
 
slavoise's Avatar
Club Car
 
Join Date: Sep 2015
Location: So Cal
Posts: 47
Default Re: Upgraded Controller & Sol... Problem now

Based on reading (99 DS, one speed, All Out!!!!!)

I did some of the testing by taking off the Yellow (#3 from my controller) and tried to do a volt test of the yellow and the B-... The cart still moves with the Yellow unplugged. Could this be part of the issue?

At ZERO throttle I get a reading of 0 volts
As I press the throttle it ramps up to the 5s.
slavoise is offline   Reply With Quote
Unread 12-31-2015, 07:59 PM   #47
Gone Wild
 
Sergio's Avatar
Club Car
 
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 4,561
Default Re: Upgraded Controller & Sol... Problem now

There is only one assumption so far we have not verified, what is the full model number of Your controller?
Sergio is online now   Reply With Quote
Unread 12-31-2015, 08:23 PM   #48
Not Yet Wild
 
slavoise's Avatar
Club Car
 
Join Date: Sep 2015
Location: So Cal
Posts: 47
Default Re: Upgraded Controller & Sol... Problem now

See attached:
Attached Images
File Type: jpg IMG_6998.jpg (163.3 KB, 0 views)
File Type: jpg IMG_7002.jpg (146.6 KB, 0 views)
File Type: jpg IMG_7003.jpg (143.9 KB, 0 views)
slavoise is offline   Reply With Quote
Unread 12-31-2015, 08:34 PM   #49
Not Yet Wild
 
slavoise's Avatar
Club Car
 
Join Date: Sep 2015
Location: So Cal
Posts: 47
Default Re: Upgraded Controller & Sol... Problem now

New development... Cart only works when Yellow is not plugged into controller. OYE
slavoise is offline   Reply With Quote
Unread 12-31-2015, 08:55 PM   #50
Gone Wild
 
Sergio's Avatar
Club Car
 
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 4,561
Default Re: Upgraded Controller & Sol... Problem now

Assumptions get us every time... Your controller 51-42L500NN0S tells us that it is configured as a 0-5kΩ resistance throttle.

You need to change your wiring to configure the MCOR properly.

Disconnect the Wire from terminal #2 and tape it, You will not use it.

Disconnect the Purple wire from Controller B- and put it on Controller Terminal #1.

So Terminal #2 = Purple and Terminal #3 = Yellow.

Happy New Year and enjoy Your cart!
Sergio is online now   Reply With Quote
Reply
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric Club Car


Thread Tools
Display Modes


Similar Threads
Thread Forum
Plug for upgraded controller Electric EZGO
2006 DS IQ w/upgraded motor & controller having throttle problem Electric Club Car
What upgraded controller did you go with? Electric EZGO
Anyone who has upgraded motor/controller in G 22? Electric Yamaha
Upgraded controller question Extreme DC!


All times are GMT -5. The time now is 08:02 AM.


Club Car Electric | EZGO Electric | Lifted Golf Carts | Gas EZGO | Used Golf Carts and Parts

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.