Stuttering - Please diagnose

Dela · 06-02-2018, 05:29 PM

Cart is stuttering at take off. Feels like a disconnect but after the stutter runs fine at full speed with no issue.

Ideas/Suggestions are appreciated. Solenoid and wiring into looked ok at first glance, I did get a burning/smokey smell when the problem started.

Thanks all

Mooncarter · 06-02-2018, 07:34 PM

Make sure all connections are clean and snug. What cart is it?

golf cart man · 06-02-2018, 10:02 PM

I've had this in one of my carts turned out to be a bad cell in one of the batteries. I'm assuming this is your new 2014 cart? does it have new batteries? It wouldn't hurt to do a load test on each battery as well as entire pack voltage after charge sitting for about 12 hours to make sure you are good in the battery department. Could be something more electrical related but I always like to start with simple easy to do stuff first.

Whitaker · 06-02-2018, 10:55 PM

Hmm.. Mine does this as well. All batteries check out.
2013 48v txt.

Sent from my SM-G935V using Tapatalk

biphase · 06-03-2018, 10:12 AM

Stuttering at take-off is almost always a battery issue. Measure the battery voltage directly at the B+ and B- terminals of your controller WHILE the cart is stuttering. You will probably see the voltage drop substantially at take-off. Battery voltage must always be measured under load. If you see a voltage drop of several volts, repeat the measurement procedure at each battery individually until you locate the bad battery.

Dela · 06-03-2018, 10:42 AM

Thanks biphase - I checked all battery cables this morning and two of the bolts were loose - added a lock washer and get them tightened up again, hoping it resolves issue. Will report back after a long run.

Dela · 06-06-2018, 05:11 AM

So it's not the battery cables - still getting the stutter. I tossed an Admiral motor on but kept the OEM controller and solenoid - never really trusted the shop that said 'that's fine to do' and have to assume thats the culprit.

Will upgrade to a new controller and solenoid package with ScottyB and see if it resolves issue.

Lochlin · 06-06-2018, 06:07 AM

Worn motor brushes can cause stuttering but your carts seem kinda new for that.

Dela · 06-06-2018, 06:14 AM

Yea and it’s a brand new motor

biphase · 06-06-2018, 07:10 AM

Have you measured the voltage at the B+ and B- terminals of the controller WHILE the cart is stuttering?

06-02-2018, 05:29 PM	#1
Dela EZ come EZ go Join Date: Apr 2012 Location: Parkland FL Posts: 1,412	Stuttering - Please diagnose Cart is stuttering at take off. Feels like a disconnect but after the stutter runs fine at full speed with no issue. Ideas/Suggestions are appreciated. Solenoid and wiring into looked ok at first glance, I did get a burning/smokey smell when the problem started. Thanks all

06-02-2018, 07:34 PM	#2
Mooncarter Gone Insane Join Date: Oct 2016 Location: Richmond, VA Posts: 14,215	Re: Stuttering - Please diagnose Make sure all connections are clean and snug. What cart is it?

06-02-2018, 10:02 PM	#3
golf cart man Gone Unrestrained Join Date: Aug 2008 Location: South Florida Posts: 1,300	Re: Stuttering - Please diagnose I've had this in one of my carts turned out to be a bad cell in one of the batteries. I'm assuming this is your new 2014 cart? does it have new batteries? It wouldn't hurt to do a load test on each battery as well as entire pack voltage after charge sitting for about 12 hours to make sure you are good in the battery department. Could be something more electrical related but I always like to start with simple easy to do stuff first.

06-02-2018, 10:55 PM	#4
Whitaker Gone Wild Join Date: Aug 2017 Location: Archdale NC Posts: 201	Re: Stuttering - Please diagnose Hmm.. Mine does this as well. All batteries check out. 2013 48v txt. Sent from my SM-G935V using Tapatalk

06-03-2018, 10:12 AM	#5
biphase Gone Wild Join Date: Jan 2009 Location: Ocala, FL Posts: 384	Re: Stuttering - Please diagnose Stuttering at take-off is almost always a battery issue. Measure the battery voltage directly at the B+ and B- terminals of your controller WHILE the cart is stuttering. You will probably see the voltage drop substantially at take-off. Battery voltage must always be measured under load. If you see a voltage drop of several volts, repeat the measurement procedure at each battery individually until you locate the bad battery.

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06-03-2018, 10:42 AM	#6
Dela EZ come EZ go Join Date: Apr 2012 Location: Parkland FL Posts: 1,412	Re: Stuttering - Please diagnose Thanks biphase - I checked all battery cables this morning and two of the bolts were loose - added a lock washer and get them tightened up again, hoping it resolves issue. Will report back after a long run.

06-06-2018, 05:11 AM	#7
Dela EZ come EZ go Join Date: Apr 2012 Location: Parkland FL Posts: 1,412	Re: Stuttering - Please diagnose So it's not the battery cables - still getting the stutter. I tossed an Admiral motor on but kept the OEM controller and solenoid - never really trusted the shop that said 'that's fine to do' and have to assume thats the culprit. Will upgrade to a new controller and solenoid package with ScottyB and see if it resolves issue.

06-06-2018, 06:07 AM	#8
Lochlin Gone Wild Join Date: May 2011 Location: Pittsburgh Posts: 2,948	Re: Stuttering - Please diagnose Worn motor brushes can cause stuttering but your carts seem kinda new for that.

06-06-2018, 06:14 AM	#9
Dela EZ come EZ go Join Date: Apr 2012 Location: Parkland FL Posts: 1,412	Re: Stuttering - Please diagnose Yea and it’s a brand new motor

06-06-2018, 07:10 AM	#10
biphase Gone Wild Join Date: Jan 2009 Location: Ocala, FL Posts: 384	Re: Stuttering - Please diagnose Have you measured the voltage at the B+ and B- terminals of the controller WHILE the cart is stuttering?

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