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Unread 07-12-2019, 12:19 PM   #1
Not Yet Wild
 
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Default 48V burning out MCORs

Hey guys I have a 2001 48V DS that keeps going through MCORs. The cart gets about 2 hours of use and starts the chugging sensation when not at full acceleration. After the cart sits it still continues next use. I have replaced the MCOR twice and it only temporarily fixed it. Could anyone tell me what keeps causing this?
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Unread 07-12-2019, 12:39 PM   #2
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Default Re: 48V burning out MCORs

I don't know for sure, but if you're using the cheap MCOR modules from Amazon or EBAY, that's probably it. Dave @ Revolution Golf Cars is our resident Club Car guru and he also sells the true OEM MCOR modules. Other than that, one of the experts will be along soon to help you out.
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Unread 07-12-2019, 03:51 PM   #3
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Default Re: 48V burning out MCORs

I am with swm63.....

And you can check the current loop like this. With the batteries connected, key switch Off, Tow/Run switch in Run; place the black (–) probe on packs main Negative post and the red (+) probe on the yellow wire at the 3-pin connector near the MCOR. (The reading should be approximately ~0.32vdc to ~0.5vdc with the pedal up). Slowly press the Go Pedal and the readings should increase until it reaches ~4.65vdc or more when the pedal is fully pressed. (Anything less than 4.60vdc and you are not reaching full throttle). If you get some crazy high number there in the loop circuit it when the pedal is all the way down (it will not run any faster), but ~may could damage it over time. I am more suspect of is this a cheap aftermarket that is poorly built.
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Unread 07-12-2019, 07:54 PM   #4
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Default Re: 48V burning out MCORs

Do your MCORs say CHINA or MEXICO?
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Unread 07-17-2019, 07:27 AM   #5
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Default Re: 48V burning out MCORs

Had the same issue with Chinese MCOR's from Amazon. Went with Mexico from EBAY and have way better results. THe last three that came from Amazon, 2 didn't work at ALL and one lasted 5 months.
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Unread 07-18-2019, 05:31 PM   #6
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Default Re: 48V burning out MCORs

A little off the wall here, but have you modified any thing in the drive train?
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Unread 07-19-2019, 01:04 PM   #7
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Default Re: 48V burning out MCORs

Quote:
Originally Posted by manimal13 View Post
Had the same issue with Chinese MCOR's from Amazon. Went with Mexico from EBAY and have way better results. THe last three that came from Amazon, 2 didn't work at ALL and one lasted 5 months.
The ones from MEXICO are factory parts. That's why.
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Unread 07-19-2019, 04:53 PM   #8
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Default Re: 48V burning out MCORs

Quote:
Originally Posted by TahoeDawgZ71 View Post
The ones from MEXICO are factory parts. That's why.
The MCOR4 (?) that you sold me nearest to 5 years ago has not missed a lick...
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Unread 07-19-2019, 05:23 PM   #9
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Default Re: 48V burning out MCORs

Quote:
Originally Posted by teecro View Post
The MCOR4 (?) that you sold me nearest to 5 years ago has not missed a lick...
Same here!
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Unread Today, 01:47 PM   #10
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Default Re: 48V burning out MCORs

Quote:
Originally Posted by teecro View Post
The MCOR4 (?) that you sold me nearest to 5 years ago has not missed a lick...

Quote:
Originally Posted by swm63 View Post
Same here!

That's because we sell OEM parts.
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