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Unread 06-16-2015, 02:01 PM   #1
Not Yet Wild
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Join Date: May 2015
Location: Flowood, Mississippi
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Default intermittent power loss

2007 club car ds that loses power. From a previous thread I thought it was the mcor but I replaced it and have the same problem.
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Unread 06-16-2015, 02:45 PM   #2
Gone Wild
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Join Date: Sep 2012
Location: Alberta - Canada
Posts: 901
Default Re: intermittent power loss

I remember your original post & Tahoe's advice:
get a multimeter with a wire piercing probe. Pierce the green wire of the 2-pin square MCOR connector with the positive lead of the meter. Use an alligator clip to put your negative lead on the main negative battery post. This will show the 48V coming out of the microswitch in the mcor when the pedal is depressed. If the voltage disappears when the car stops, the MCOR is the problem.
And your reply:
You nailed it! It came and went right with the meter readings. Where's the best place to get a new one?
To me - it seems like it must be a bad/intermittent connection in something associated directly with that circuit (or those connectors), but other than insuring that particular plug and its internal connectors aren't corroded or faulty; or following those wires to look for breaks - only clever folks like Tahoe & Sergio might know exactly where to look next.
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Unread 06-16-2015, 11:21 PM   #3
Dawg Gone Wild
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Join Date: Mar 2010
Location: Golf Car Capital of The World... Augusta, Georgia
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Default Re: intermittent power loss

If you lost power on the multimeter when you were tapped into the green wire then there are only two possible scenarios. One is that the microswitch in the MCOR is bad, which is what we assumed. The green wire is where the power exits the MCOR en route to the controller. The only other possibility is that the power supply is getting disrupted before it gets into the MCOR via the blue wire. This can come from a short in the wiring at any point in the entire electrical system. However, it may also be something as simple as a short in the keyswitch. I don't know the history of your vehicle, but if it was previously used on a golf course near the ocean you may have some wiring harness damage. Harnesses are fairly cheap. They're about the same as an MCOR. I'd check the simple stuff first though. Check for power going in, and out, of the keyswitch via the green (in) and blue (out). Use positive lead and put negative lead of meter on B- battery to do these tests.
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