00 DS works in F but not in R

cmar143 · 03-19-2013, 09:35 AM

I have a 2000DS I am looking at that works fine in forward but not in reverse. The solenoid clicks but I am not seeing a drop in voltage on controller B- and M-. All wiring looks good, micros on f/r check out too. Cart has mcor not vglide and any help on where to look or test next would be appreciated. Thanks

cmar143 · 03-19-2013, 10:00 AM

Btw it's a 48v series cart

scottyb · 03-19-2013, 10:19 AM

It could be loosing contact in the F&R

cmar143 · 03-19-2013, 01:06 PM

Took apart f/r and sanded terminals so they are good. It has to do with moisture somewhere because now that it's dried out it is working. I have never seen anything like this. If mcor works in forward it should work the same in reverse right? Does throttle go through controller the same in forward as reverse? Pretty sure it does but I am at a loss here. Had no reverse while forward worked perfect and as the day went on reverse started kicking in only with pedal to the floor and then slowly started working higher and higher. Solenoid clicked the whole time at normal position which really makes me scratch my head.

Stevegrmich · 03-19-2013, 01:43 PM

Quote:

Originally Posted by cmar143

Took apart f/r and sanded terminals so they are good. It has to do with moisture somewhere because now that it's dried out it is working. I have never seen anything like this. If mcor works in forward it should work the same in reverse right? Does throttle go through controller the same in forward as reverse? Pretty sure it does but I am at a loss here. Had no reverse while forward worked perfect and as the day went on reverse started kicking in only with pedal to the floor and then slowly started working higher and higher. Solenoid clicked the whole time at normal position which really makes me scratch my head.

. . . you never mentioned "moisture" until now . . . was it hosed down/power washed?

cmar143 · 03-19-2013, 02:33 PM

No just sat out in the rain for an hour but it does the same thing on humid mornings but has never totally not worked in reverse

jantrree · 03-19-2013, 04:59 PM

Have you tried spraying with WD40. That is a great water repellant. In fact that is what is was originally designed for. Club Car maintenance manual suggests spraying charger plug inlet with WD40 to keep our moisture. Might want to check with more knowledgeable people about if WD40 is permissible. But if it's just wires and connections, it should be fine.

"According to the company that makes WD-40: WD-40 literally stands for water displacement 40th attempt. That's the name straight out of the lab book used by the chemist who helped develop WD-40 back in 1953. Norm Larsen, was attempting to concoct a formula to prevent corrosion, a task which is done by displacing water. Norm's persistence paid off when he perfected the formula for WD-40 on his 40th try."

cmar143 · 03-19-2013, 05:13 PM

I repair golf carts all day so I have a good understanding how they work but this is an issue that I have never seen and its obviously due to moisture. The problem of finding the part that is succumbing to the problem is the issue. I have ruled out f/r switch and 3 micro switches. As far as I know mcor should work the same no matter if its forward or reverse. I personally think its the controller but I need someone more experienced to tell me why the controller outputs voltage to motor correctly in forward but not in reverse when measuring with DVM at b- and m-? Solenoid is working both ways properly

TahoeDawgZ71 · 03-19-2013, 08:37 PM

Swap the black wire with the white wire on the rear-most micro switch and see what you've got. You should be going in reverse and not forward. My money is on a bad microswitch or a bad half-speed resistor. Both minor and easy to repair.

cmar143 · 03-20-2013, 09:19 AM

Switched wires and problem follows to forward. Where is the resistor located? Don't think there is one or it's far down the harness where I don't see it.

03-19-2013, 09:35 AM	#1
cmar143 Gone Wild Join Date: Dec 2010 Location: Orlando Posts: 382	00 DS works in F but not in R I have a 2000DS I am looking at that works fine in forward but not in reverse. The solenoid clicks but I am not seeing a drop in voltage on controller B- and M-. All wiring looks good, micros on f/r check out too. Cart has mcor not vglide and any help on where to look or test next would be appreciated. Thanks

03-19-2013, 10:00 AM	#2
cmar143 Gone Wild Join Date: Dec 2010 Location: Orlando Posts: 382	Re: 00 DS works in F but not in R Btw it's a 48v series cart

03-19-2013, 10:19 AM	#3
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,418	Re: 00 DS works in F but not in R It could be loosing contact in the F&R

03-19-2013, 01:06 PM	#4
cmar143 Gone Wild Join Date: Dec 2010 Location: Orlando Posts: 382	Re: 00 DS works in F but not in R Took apart f/r and sanded terminals so they are good. It has to do with moisture somewhere because now that it's dried out it is working. I have never seen anything like this. If mcor works in forward it should work the same in reverse right? Does throttle go through controller the same in forward as reverse? Pretty sure it does but I am at a loss here. Had no reverse while forward worked perfect and as the day went on reverse started kicking in only with pedal to the floor and then slowly started working higher and higher. Solenoid clicked the whole time at normal position which really makes me scratch my head.

03-19-2013, 02:33 PM	#6
cmar143 Gone Wild Join Date: Dec 2010 Location: Orlando Posts: 382	Re: 00 DS works in F but not in R No just sat out in the rain for an hour but it does the same thing on humid mornings but has never totally not worked in reverse

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03-19-2013, 04:59 PM	#7
jantrree Gone Wild Join Date: Feb 2010 Location: Florida Posts: 184	Re: 00 DS works in F but not in R Have you tried spraying with WD40. That is a great water repellant. In fact that is what is was originally designed for. Club Car maintenance manual suggests spraying charger plug inlet with WD40 to keep our moisture. Might want to check with more knowledgeable people about if WD40 is permissible. But if it's just wires and connections, it should be fine. "According to the company that makes WD-40: WD-40 literally stands for water displacement 40th attempt. That's the name straight out of the lab book used by the chemist who helped develop WD-40 back in 1953. Norm Larsen, was attempting to concoct a formula to prevent corrosion, a task which is done by displacing water. Norm's persistence paid off when he perfected the formula for WD-40 on his 40th try."

03-19-2013, 05:13 PM	#8
cmar143 Gone Wild Join Date: Dec 2010 Location: Orlando Posts: 382	Re: 00 DS works in F but not in R I repair golf carts all day so I have a good understanding how they work but this is an issue that I have never seen and its obviously due to moisture. The problem of finding the part that is succumbing to the problem is the issue. I have ruled out f/r switch and 3 micro switches. As far as I know mcor should work the same no matter if its forward or reverse. I personally think its the controller but I need someone more experienced to tell me why the controller outputs voltage to motor correctly in forward but not in reverse when measuring with DVM at b- and m-? Solenoid is working both ways properly

03-19-2013, 08:37 PM	#9
TahoeDawgZ71 revolutiongolfcars.com Join Date: Mar 2010 Location: Golf Car Capital of The World... Augusta, Georgia Posts: 10,224	Re: 00 DS works in F but not in R Swap the black wire with the white wire on the rear-most micro switch and see what you've got. You should be going in reverse and not forward. My money is on a bad microswitch or a bad half-speed resistor. Both minor and easy to repair.

03-20-2013, 09:19 AM	#10
cmar143 Gone Wild Join Date: Dec 2010 Location: Orlando Posts: 382	Re: 00 DS works in F but not in R Switched wires and problem follows to forward. Where is the resistor located? Don't think there is one or it's far down the harness where I don't see it.

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