Sluggish acceleration

GreezMunky · 12-15-2014, 11:49 AM

OKay guys, I've got a 1994 Ezgo txt with problems accelerating. When I've got the cart on the lift, and I depress the accelerator, I am getting approximately 36 Volts (24V in reverse) to the motor and it seems to roll just fine. BUT, when it's on the ground, the motor is only getting about 20V in forward, and about 7-8V in reverse. Any idea what the problem might be? Controller?

Also, I have charged and discharged the batteries (and charged again), and the batteries ran 107 minutes, so I know the batteries are in good condition.

scottyb · 12-15-2014, 11:53 AM

Check your throttle signal. It should read 0-5000 in forward and 0-2500 in reverse or close to that.

GreezMunky · 12-15-2014, 11:58 AM

with a volt meter? which setting do I put it on? And you're talking about the two throttle prongs on the controller, right?

sorry, I'm kind of a beginner with this electrical stuff. I'm a nut and bolt kinda guy. hahaha.

scottyb · 12-15-2014, 12:54 PM

Set the multi-meter to ohms Ω at a range of 0-20000 if not auto ranging model. Pull the 2 leads from the throttle pot off of the control (usually pins #2 & 3) and plug the meter into the spade terminals for testing.

GreezMunky · 12-15-2014, 02:04 PM

Quote:

Originally Posted by scottyb

Set the multi-meter to ohms Ω at a range of 0-20000 if not auto ranging model. Pull the 2 leads from the throttle pot off of the control (usually pins #2 & 3) and plug the meter into the spade terminals for testing.

okay, so I pulled the cover off the controller and it's the 5-pin with a white plug . Which two pins do I test? and should it be the same ohms as you stated above?

GreezMunky · 12-15-2014, 02:27 PM

On pins #2 & #3 (from the left; red and orange wires) I'm showing 11.07k ohms, and in reverse the meter jumps all over the place and I can't get a solid reading. What's my next step?

cgtech · 12-15-2014, 11:18 PM

Me think that is ITS throttle, not tested with ohms setting.

GreezMunky · 12-16-2014, 08:49 AM

Quote:

Originally Posted by cgtech

Me think that is ITS throttle, not tested with ohms setting.

Thanks cgtech! Almost thought I was losing my mind. ha.

So, is there a way for me to test if it is the controller without swapping it out with a new/good one?

GreezMunky · 12-17-2014, 02:07 PM

bump.

foureyed331 · 12-18-2014, 08:55 PM

So I don't know a lot about golf carts, and what differences each has, but I tore down an older ez-go that I assumed had weak batteries only to find that not all of the contacts on the throttle linkage were touching. The linkage had been bent causing it to not go all the way forward and getting full voltage. May not be the same issue, but under a load I can see there being a voltage drop difference.

12-15-2014, 11:49 AM	#1
GreezMunky Not Yet Wild Join Date: Nov 2014 Posts: 27	Sluggish acceleration OKay guys, I've got a 1994 Ezgo txt with problems accelerating. When I've got the cart on the lift, and I depress the accelerator, I am getting approximately 36 Volts (24V in reverse) to the motor and it seems to roll just fine. BUT, when it's on the ground, the motor is only getting about 20V in forward, and about 7-8V in reverse. Any idea what the problem might be? Controller? Also, I have charged and discharged the batteries (and charged again), and the batteries ran 107 minutes, so I know the batteries are in good condition.
GreezMunky Not Yet Wild Join Date: Nov 2014 Posts: 27

12-15-2014, 11:58 AM	#3
GreezMunky Not Yet Wild Join Date: Nov 2014 Posts: 27	Re: Sluggish acceleration with a volt meter? which setting do I put it on? And you're talking about the two throttle prongs on the controller, right? sorry, I'm kind of a beginner with this electrical stuff. I'm a nut and bolt kinda guy. hahaha.
GreezMunky Not Yet Wild Join Date: Nov 2014 Posts: 27

12-15-2014, 12:54 PM	#4
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,408	Re: Sluggish acceleration Set the multi-meter to ohms Ω at a range of 0-20000 if not auto ranging model. Pull the 2 leads from the throttle pot off of the control (usually pins #2 & 3) and plug the meter into the spade terminals for testing.

12-15-2014, 02:27 PM	#6
GreezMunky Not Yet Wild Join Date: Nov 2014 Posts: 27	Re: Sluggish acceleration On pins #2 & #3 (from the left; red and orange wires) I'm showing 11.07k ohms, and in reverse the meter jumps all over the place and I can't get a solid reading. What's my next step?
GreezMunky Not Yet Wild Join Date: Nov 2014 Posts: 27

12-15-2014, 11:18 PM	#7
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Sluggish acceleration Me think that is ITS throttle, not tested with ohms setting.

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12-15-2014, 11:53 AM	#2
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,408	Re: Sluggish acceleration Check your throttle signal. It should read 0-5000 in forward and 0-2500 in reverse or close to that.

12-17-2014, 02:07 PM	#9
GreezMunky Not Yet Wild Join Date: Nov 2014 Posts: 27	Re: Sluggish acceleration bump.
GreezMunky Not Yet Wild Join Date: Nov 2014 Posts: 27

12-18-2014, 08:55 PM	#10
foureyed331 Not Yet Wild Join Date: Sep 2013 Posts: 2	Re: Sluggish acceleration So I don't know a lot about golf carts, and what differences each has, but I tore down an older ez-go that I assumed had weak batteries only to find that not all of the contacts on the throttle linkage were touching. The linkage had been bent causing it to not go all the way forward and getting full voltage. May not be the same issue, but under a load I can see there being a voltage drop difference.
foureyed331 Not Yet Wild Join Date: Sep 2013 Posts: 2

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