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Unread 06-17-2014, 12:25 PM   #1
Not Yet Wild
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Join Date: Dec 2012
Posts: 6
Default No movement if accelerator pressed to quickly?

I have a 48 Volt 97 Club Car DS. I upgraded the controller to a FSIS 700 amp controller (I have it turned all the way down which it says limits it to 50%). I upgraded to an HD solenoid upgraded the diode on the solenoid. Upgraded to 4g wires throughout. I upgraded to F/R switch to a HD model. All done to prepare for an motor upgrade. The motor is stock at this time. Oh and I also put in a new set of trojan batteries (6 - 8 volt batteries).

My question is about the acceleration. If I step down on the accelerator pedal quickly it clicks but nothing happens. If I push it down more slowly it will take off and run fine. The other thing it does is if you are driving and let off the accelerator a few times to quickly it will no longer go forward. You have to let it sit for about a minute and then it will go again. During that time it will go in reverse but not forward. It isn't a huge problem but I am worried it is a sign of problems to come. Any ideas where to start looking for the problem? I want to get everything working correctly before I move on the the motor swap.
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Unread 06-17-2014, 12:49 PM   #2
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Join Date: Sep 2013
Location: jupiter florida
Posts: 495
Default Re: No movement if accelerator pressed to quickly?

4 gauge wire is not big enough for a 700 amp controller. you need number one or two. I don't know what would be wrong with your controller there's people that know more about it than me. do you have all the diodes installed properly and the resistors
it could be something to do with your throttle linkage. if the controller gets a throttle signal before the solenoid closes you could throw a trouble code on the controller.

Last edited by branson; 06-17-2014 at 02:33 PM.. Reason: at about throttle linkage
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Unread 06-17-2014, 01:19 PM   #3
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Join Date: Jun 2014
Location: Northwest USA
Posts: 57
Default Re: No movement if accelerator pressed to quickly?

sounds like a safety mechanism is in play, have you read the spec to make sure that its not limiting a inrush current or flapping of current to protect the system from "abuse"
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Unread 06-17-2014, 04:18 PM   #4
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Join Date: Dec 2007
Location: Southern California
Posts: 64,077
Default Re: No movement if accelerator pressed to quickly?

You may want to check your throttle output signal.... easy to do with an OHM meter. just pull the wires off controller pins 2&3 and plug your meter in, then start pressing the gas both fast and slow and report the results.... you are looking for 5000 - 0 ideally.
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