no low speed

charles63 · 06-17-2019, 08:08 AM

Newbie.

I hope this is the proper area for this post. I have a 1978 36 Volt Cushman Titan solenoid clicks on and off through low acceleration and does not engage until full throttle. Changed the solenoid but no changes except it now has a fainter clicking sound. Any thoughts or suggestions? By the way the batteries have also been changed.

Lochlin · 06-17-2019, 11:47 AM

Yeah, the mods will probably move this to the non-specific electric golf cart section.

I don't know your cart specifically but I know resistor carts pretty well.

Your solenoid seems like it's doing it's thing. With your voltmeter, put the black probe on a battery negative or any ground for that matter. Have someone hit that low gear with the accelerator. You should see 36v on your meter. If not, you have a wiring problem before that solenoid. If you have 36v there then you have an issue after that solenoid which has to be either the cable or the motor. My guess is that the motor needs servicing (brushes or bearings) and the lower voltage needed by the low speed circuit isn't enough to spin the motor while the higher voltage can.

charles63 · 06-17-2019, 02:26 PM

thank you will give that a try this w/e

bronsonj · 06-17-2019, 02:49 PM

I can see how the motor needing servicing could cause the no-slow-go symptom, but I don't see how it would cause the solenoid to drop out. Do the test Lochlin recommended while the solenoid is clicking on/off through the low speed acceleration. It'll be interesting to see if the solenoid drops out because it's being told there's no throttle on the control circuit.

JohnnieB · 06-17-2019, 03:09 PM

I'm not sure, but wasn't 1978 in the pre-controller era?

Some picture of the drive system would help.

binder49 · 06-17-2019, 05:14 PM

I believe that cart has the sweep controller for speed. I would check the contacts on the sweep. I had one of those doing the same thing. the contacts on the board were bad as was the sweep contactor

Lochlin · 06-17-2019, 07:46 PM

With the age I assumed it was a resistor cart.. If so, bottom line is that if that solenoid is sending current then there is nothing else there but wiring and motor. Obviously, this woundn't apply if it is not a resistor cart.

charles63 · 06-26-2019, 01:27 PM

Did the test suggested will pull motor out this w/e and see what comes of it when rebuild.

06-17-2019, 08:08 AM	#1
charles63 Not Yet Wild Join Date: May 2019 Location: Penetanguishene Ontario Canada Posts: 4	no low speed Newbie.I hope this is the proper area for this post. I have a 1978 36 Volt Cushman Titan solenoid clicks on and off through low acceleration and does not engage until full throttle. Changed the solenoid but no changes except it now has a fainter clicking sound. Any thoughts or suggestions? By the way the batteries have also been changed.

06-17-2019, 11:47 AM	#2
Lochlin Gone Wild Join Date: May 2011 Location: Pittsburgh Posts: 2,948	Re: no low speed Yeah, the mods will probably move this to the non-specific electric golf cart section. I don't know your cart specifically but I know resistor carts pretty well. Your solenoid seems like it's doing it's thing. With your voltmeter, put the black probe on a battery negative or any ground for that matter. Have someone hit that low gear with the accelerator. You should see 36v on your meter. If not, you have a wiring problem before that solenoid. If you have 36v there then you have an issue after that solenoid which has to be either the cable or the motor. My guess is that the motor needs servicing (brushes or bearings) and the lower voltage needed by the low speed circuit isn't enough to spin the motor while the higher voltage can.

06-17-2019, 02:26 PM	#3
charles63 Not Yet Wild Join Date: May 2019 Location: Penetanguishene Ontario Canada Posts: 4	Re: no low speed thank you will give that a try this w/e

06-17-2019, 02:49 PM	#4
bronsonj Gone Wild Join Date: Jan 2013 Location: Saint Petersburg, FL Posts: 2,089	Re: no low speed I can see how the motor needing servicing could cause the no-slow-go symptom, but I don't see how it would cause the solenoid to drop out. Do the test Lochlin recommended while the solenoid is clicking on/off through the low speed acceleration. It'll be interesting to see if the solenoid drops out because it's being told there's no throttle on the control circuit.

06-17-2019, 03:09 PM	#5
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: no low speed I'm not sure, but wasn't 1978 in the pre-controller era? Some picture of the drive system would help.

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06-17-2019, 05:14 PM	#6
binder49 Gone Wild Join Date: Jul 2009 Posts: 158	Re: no low speed I believe that cart has the sweep controller for speed. I would check the contacts on the sweep. I had one of those doing the same thing. the contacts on the board were bad as was the sweep contactor
binder49 Gone Wild Join Date: Jul 2009 Posts: 158

06-17-2019, 07:46 PM	#7
Lochlin Gone Wild Join Date: May 2011 Location: Pittsburgh Posts: 2,948	Re: no low speed With the age I assumed it was a resistor cart.. If so, bottom line is that if that solenoid is sending current then there is nothing else there but wiring and motor. Obviously, this woundn't apply if it is not a resistor cart.

06-26-2019, 01:27 PM	#8
charles63 Not Yet Wild Join Date: May 2019 Location: Penetanguishene Ontario Canada Posts: 4	Re: no low speed Did the test suggested will pull motor out this w/e and see what comes of it when rebuild.

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