DS won't reach above 7 mph

begvis · 08-30-2021, 03:50 PM

06 Ds, 400a Alltrax, DD

Cart would routinely cruise 22-24 mph, after moderate length ride, now will accelerate normal and then top out around 7. From what I've researched here, speed sensor? Throttle sensor or mcor. Haven't hooked up USB to allltrax yet, has a steady green light. Motor doesn't get hot, no burning, volts under load didip to around 49v. Haven't gotten to speak to DD yet either.
The light will flash amber when driven, which according to manual says throttle is wide open but controller is in current limit.
What would cause the controller to limit itself

Scott quail · 08-30-2021, 04:44 PM

I cannot be certain but when you are full throttle but the cart is in limp mode its usually a speed sensor. I cannot say for sure as I do not have the experience with alltrax as some of the great people this forum but that symptom is usually a speed sensor issue. Check the magnet also. Is it cracked?

begvis · 08-30-2021, 04:59 PM

Its been 4 plus years since I was under it, is speed sensor the piece with pigtails on motor end? Seems like the amount of stuff I got working is 10 percent of all my stuff lately

Scott quail · 08-30-2021, 05:10 PM

Yep. End of the motor. Has 3 wires. You can take the speed sensor off and inspect the magnet for any damage or cracks. The magnet is right behind the speed sensor.

Scott quail · 08-30-2021, 05:15 PM

Read this thread. Explains how to do a roll test of the speed sensor.
https://www.buggiesgonewild.com/showthread.php?t=68248

Fairtax4me · 08-30-2021, 06:28 PM

You can disable the speed limit in the controller to test the speed sensor.
Likely the speed sensor is bad, but check the magnet as well for any cracks.

08-30-2021, 03:50 PM	#1
begvis Not Yet Wild Join Date: Jun 2010 Posts: 36	DS won't reach above 7 mph 06 Ds, 400a Alltrax, DD Cart would routinely cruise 22-24 mph, after moderate length ride, now will accelerate normal and then top out around 7. From what I've researched here, speed sensor? Throttle sensor or mcor. Haven't hooked up USB to allltrax yet, has a steady green light. Motor doesn't get hot, no burning, volts under load didip to around 49v. Haven't gotten to speak to DD yet either. The light will flash amber when driven, which according to manual says throttle is wide open but controller is in current limit. What would cause the controller to limit itself
begvis Not Yet Wild Join Date: Jun 2010 Posts: 36

08-30-2021, 04:44 PM	#2
Scott quail Gone Wild Join Date: May 2021 Posts: 289	Re: DS won't reach above 7 mph I cannot be certain but when you are full throttle but the cart is in limp mode its usually a speed sensor. I cannot say for sure as I do not have the experience with alltrax as some of the great people this forum but that symptom is usually a speed sensor issue. Check the magnet also. Is it cracked?
Scott quail Gone Wild Join Date: May 2021 Posts: 289

08-30-2021, 04:59 PM	#3
begvis Not Yet Wild Join Date: Jun 2010 Posts: 36	Re: DS won't reach above 7 mph Its been 4 plus years since I was under it, is speed sensor the piece with pigtails on motor end? Seems like the amount of stuff I got working is 10 percent of all my stuff lately
begvis Not Yet Wild Join Date: Jun 2010 Posts: 36

08-30-2021, 05:10 PM	#4
Scott quail Gone Wild Join Date: May 2021 Posts: 289	Re: DS won't reach above 7 mph Yep. End of the motor. Has 3 wires. You can take the speed sensor off and inspect the magnet for any damage or cracks. The magnet is right behind the speed sensor.
Scott quail Gone Wild Join Date: May 2021 Posts: 289

08-30-2021, 05:15 PM	#5
Scott quail Gone Wild Join Date: May 2021 Posts: 289	Re: DS won't reach above 7 mph Read this thread. Explains how to do a roll test of the speed sensor. https://www.buggiesgonewild.com/showthread.php?t=68248
Scott quail Gone Wild Join Date: May 2021 Posts: 289

Today
BGW	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

08-30-2021, 06:28 PM	#6
Fairtax4me Bonafide Nincompoop Join Date: Dec 2015 Location: Charlottesburg Va Posts: 8,987	Re: DS won't reach above 7 mph You can disable the speed limit in the controller to test the speed sensor. Likely the speed sensor is bad, but check the magnet as well for any cracks.

Similar Threads
Thread	Forum
New batteries never reach full charge	Electric EZGO
Can't Reach the Steering Wheel	Electric Club Car
Cart wont reach top speed	Gas EZGO
G14A - Intake leak, not able to reach full speed	Gas Yamaha