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Old 09-01-2019, 06:11 PM   #1
ZackMan
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Default 2008 Club Car Precedent

We are currently on the road and our golf cart “powers down” after a short distance when the accelerator pedal is pressed. Once I release the pedal and press down again the cart powers up and moves forward but repeats the process.

When I gently press the pedal the cart will remain steady in forward motion, but may repeat the process. I replaced the MCOR with an OEM unit thinking that it was the culprit. It worked perfectly for a short period and then went downhill again. The batteries are good and the cart has four 12 volts.

What may be the issue?

Thanks.
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Old 09-01-2019, 08:30 PM   #2
WalterM6
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Default Re: 2008 Club Car Precedent

It sounds like the solenoid isn't closing and it's getting power through the precharge resistor. Check your solenoid and make sure you're getting 48v on the small terminals when you step on the throttle. And zero volts between the two large terminals.

Last edited by WalterM6; 09-01-2019 at 09:13 PM.. Reason: Corrected ohms to volts
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Old 09-01-2019, 08:32 PM   #3
Fairtax4me
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Default Re: 2008 Club Car Precedent

Whats your pack voltage when it stops?
Whats pack voltage when driving?
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Old 09-01-2019, 08:41 PM   #4
ZackMan
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Default Re: 2008 Club Car Precedent

Quote:
Originally Posted by Fairtax4me View Post
Whats your pack voltage when it stops?
Whats pack voltage when driving?
The pack voltage is around 50 when stopped and 46-48 when driving.
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Old 09-01-2019, 09:49 PM   #5
Fairtax4me
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Default Re: 2008 Club Car Precedent

Seems Ok. I like to see 49 driving/ under load but as long as it’s over 35v then low voltage shouldn’t be an issue.

Nvm that... you replaced MCOR, so probably not that. Might be a loose connection somewhere, but I don’t think the solenoid would just randomly open unless the controller is losing another input for some reason.

You can test that(sort of) by bypassing the solenoid, and that will keep the cart in limp mode but should allow it to continue to run.
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Old 09-02-2019, 01:58 PM   #6
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Default Re: 2008 Club Car Precedent

Quote:
Originally Posted by Fairtax4me View Post
Seems Ok. I like to see 49 driving/ under load but as long as it’s over 35v then low voltage shouldn’t be an issue.

Nvm that... you replaced MCOR, so probably not that. Might be a loose connection somewhere, but I don’t think the solenoid would just randomly open unless the controller is losing another input for some reason.

You can test that(sort of) by bypassing the solenoid, and that will keep the cart in limp mode but should allow it to continue to run.
Thanks for the response. When we return home, I will further test.
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