Full speed all the time on yamaha 36v

Dustin Dykstra · 12-11-2018, 08:57 PM

My 36v yamaha has no speed variation in the pedal, I press the pedal just far enough for the relay to click then it takes off both rear wheels spinning, the pedal has no controle other than on and off.
Do I need a new controller?
The model of the controler is jf310.

CP241 · 12-12-2018, 04:10 PM

Disconnect the connector on the gas pedal and hook a meter up to the wires, set to ohms. IT should be variable from something like 0 ohms to 5k ohms depending on how far you press the pedal down. I'm sure someone here can chime in with exact resistance readings. But, if the pot on the pedal is bad, it could cause your problems.

cgtech · 12-12-2018, 10:57 PM

G14 is 0-1k throttle.

cgtech · 12-12-2018, 10:59 PM

Just unplug the 3 wire throttle sensor in the gas pedal area. If pressing the gas pedal still results in full throttle, there is a serious wiring mismatch problem with "battery cable sized wires", or a bad controller.

Dustin Dykstra · 12-13-2018, 12:59 AM

After Un plugging the 3 wire throttle sensor and leaving it unplugged it still goes full throttle. I also checked the thorottle sensor with a meter and it varied with the pedal from 0-1k. Im guessing its a bad controler because the other day it was working fine and later that night I went out to park it and it only went full throttle. I haven't messed with any of the main wiring.

cgtech · 12-13-2018, 09:45 AM

Good enough for me... Bad controller.

Dustin Dykstra · 12-14-2018, 10:56 AM

Thanks for the imput it is a bad controller.

12-11-2018, 08:57 PM	#1
Dustin Dykstra Not Yet Wild Join Date: Dec 2018 Posts: 3	Full speed all the time on yamaha 36v My 36v yamaha has no speed variation in the pedal, I press the pedal just far enough for the relay to click then it takes off both rear wheels spinning, the pedal has no controle other than on and off. Do I need a new controller? The model of the controler is jf310.
Dustin Dykstra Not Yet Wild Join Date: Dec 2018 Posts: 3

12-12-2018, 04:10 PM	#2
CP241 Nincompoop village idiot Join Date: Apr 2018 Location: Michigan Posts: 9,690	Re: Full speed all the time on yamaha 36v Disconnect the connector on the gas pedal and hook a meter up to the wires, set to ohms. IT should be variable from something like 0 ohms to 5k ohms depending on how far you press the pedal down. I'm sure someone here can chime in with exact resistance readings. But, if the pot on the pedal is bad, it could cause your problems.

12-12-2018, 10:57 PM	#3
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Full speed all the time on yamaha 36v G14 is 0-1k throttle.

12-12-2018, 10:59 PM	#4
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Full speed all the time on yamaha 36v Just unplug the 3 wire throttle sensor in the gas pedal area. If pressing the gas pedal still results in full throttle, there is a serious wiring mismatch problem with "battery cable sized wires", or a bad controller.

12-13-2018, 12:59 AM	#5
Dustin Dykstra Not Yet Wild Join Date: Dec 2018 Posts: 3	Re: Full speed all the time on yamaha 36v After Un plugging the 3 wire throttle sensor and leaving it unplugged it still goes full throttle. I also checked the thorottle sensor with a meter and it varied with the pedal from 0-1k. Im guessing its a bad controler because the other day it was working fine and later that night I went out to park it and it only went full throttle. I haven't messed with any of the main wiring.
Dustin Dykstra Not Yet Wild Join Date: Dec 2018 Posts: 3

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

12-13-2018, 09:45 AM	#6
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Full speed all the time on yamaha 36v Good enough for me... Bad controller.

12-14-2018, 10:56 AM	#7
Dustin Dykstra Not Yet Wild Join Date: Dec 2018 Posts: 3	Re: Full speed all the time on yamaha 36v Thanks for the imput it is a bad controller.
Dustin Dykstra Not Yet Wild Join Date: Dec 2018 Posts: 3

Similar Threads
Thread	Forum
Yamaha G1 Only Runs with full choke and full Throttle	Gas Yamaha
Short run time on full charge	Electric Club Car
Loud noise and clicking at full speed on new high speed motor.	Electric EZGO
Full speed forward, full speed reverse	Electric EZGO