lifted club cars - lifted ezgo
Home FAQDonate Who's Online
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric Club Car
Electric Club Car Electric DS, and Precedent golf cars



Post New Thread  Reply
Thread Tools Display Modes
Unread 08-25-2010, 10:31 AM   #1
Gone Wild
 
cheapjeep2's Avatar
Club Car
 
Join Date: Nov 2008
Location: Peachtree City, Georgia
Posts: 1,529
Default A heat problem or a short across the pack?

So this weekend as some of you may have read, I had a crappy weekend, in the process of replacing a motor I thought I had already disconnected power but didn't and fried the stock IQ controller.

Got the controller replaced with another stock unit, got the Plumquick installed. So when hooking everything back up I was ready to hook up the state of charge meter. Well the meter was only across three batteries, so I thought this is not right some boner didn't hook it up across the entire 48 volt pack. So I moved the connections to the entire pack. Hooked up everything and it was great no issues. Ran perfect.

Well yesterday evening I get a call the cart had been on a long drive the cart reported to have lost significant power, but were able to nurse it home. It was if they put down the throttle and only had a 1/4 o 1/2 of the power output, so this is making think Heat was built up.

So I get the cart and I see that the state of charge meter had never moved and has melted, so it's got really hot.

This makes me wonder if the problem with the cart losing power was short across the pack with the meter. I am now thinking someone only installed a 24-36 volt meter on a 48 volt pack. And when I moved it to the full 48 volts it started to overload and create a short cutting power... Does this sound feasible?

Or is there something else that I should be looking for?
cheapjeep2 is offline   Reply With Quote
Alt Today
BGW

Golf car forum Sponsored Links

__________________
This advertising will not be shown in this way to registered members.
Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum
   
Unread 08-25-2010, 11:58 AM   #2
Gone Wild
 
dougmcp's Avatar
 
Join Date: Mar 2009
Location: Roseville, CA
Posts: 2,757
Default Re: A heat problem or a short across the pack?

Quote:
Originally Posted by cheapjeep2 View Post
Well yesterday evening I get a call the cart had been on a long drive the cart reported to have lost significant power, but were able to nurse it home. It was if they put down the throttle and only had a 1/4 o 1/2 of the power output, so this is making think Heat was built up.

So I get the cart and I see that the state of charge meter had never moved and has melted, so it's got really hot.

This makes me wonder if the problem with the cart losing power was short across the pack with the meter. I am now thinking someone only installed a 24-36 volt meter on a 48 volt pack. And when I moved it to the full 48 volts it started to overload and create a short cutting power... Does this sound feasible?
It's not that uncommon for a 24v-36v meter to be installed in a 48v cart and just shortwire the leads to 24v-36v on the pack.
For it to short the batteries is almost impossible, shorted out would just melt/blow up the meter and that would be the end of it.
As far as run time and limping home, you likely started out with a partially charged pack and there may be something wrong with the OBC.
dougmcp is offline   Reply With Quote
Unread 08-25-2010, 12:13 PM   #3
Gone Wild
 
cheapjeep2's Avatar
Club Car
 
Join Date: Nov 2008
Location: Peachtree City, Georgia
Posts: 1,529
Default Re: A heat problem or a short across the pack?

Really? Cause in all the carts I've ever worked on, I've never seen that before. I am starting to think the pack drained. I put it on the charger last night around 10pm and it's still going now. I don't think they charged it before they took off. BUT when I got to my house after the issues last night, I checked the pack voltage at it was at 50.3v.
cheapjeep2 is offline   Reply With Quote
Unread 08-25-2010, 01:37 PM   #4
Cartsunlimited.net
 
scottyb's Avatar
E-Z-GO
 
Join Date: Dec 2007
Location: Southern California
Posts: 64,064
Default Re: A heat problem or a short across the pack?

Are you saying the pack was at 50.3 before charging and the charger has been on for 12 hrs?
scottyb is offline   Reply With Quote
Unread 08-25-2010, 01:44 PM   #5
Gone Wild
 
cheapjeep2's Avatar
Club Car
 
Join Date: Nov 2008
Location: Peachtree City, Georgia
Posts: 1,529
Default Re: A heat problem or a short across the pack?

Quote:
Originally Posted by scottyb View Post
Are you saying the pack was at 50.3 before charging and the charger has been on for 12 hrs?

Do you think it's possible that when I shorted the controller that the OBC was damaged as well?
cheapjeep2 is offline   Reply With Quote
Unread 08-25-2010, 01:56 PM   #6
Gone Wild
 
cheapjeep2's Avatar
Club Car
 
Join Date: Nov 2008
Location: Peachtree City, Georgia
Posts: 1,529
Default Re: A heat problem or a short across the pack?

Quote:
Originally Posted by scottyb View Post
Are you saying the pack was at 50.3 before charging and the charger has been on for 12 hrs?
Yes, still on 4 on chargers ammeter and the pack is reading 59.4 right now while on the charger.
cheapjeep2 is offline   Reply With Quote
Unread 08-25-2010, 02:01 PM   #7
Cartsunlimited.net
 
scottyb's Avatar
E-Z-GO
 
Join Date: Dec 2007
Location: Southern California
Posts: 64,064
Default Re: A heat problem or a short across the pack?

You know the cut off is 58.3v but voltmeters do vary 5% or so.... I don't know if you could have shorted out the OBC like that?
scottyb is offline   Reply With Quote
Unread 08-25-2010, 02:06 PM   #8
Gone Wild
 
cheapjeep2's Avatar
Club Car
 
Join Date: Nov 2008
Location: Peachtree City, Georgia
Posts: 1,529
Default Re: A heat problem or a short across the pack?

Quote:
Originally Posted by scottyb View Post
You know the cut off is 58.3v but voltmeters do vary 5% or so.... I don't know if you could have shorted out the OBC like that?
Yea, I know the cutoff..... I have a bad feeling about this as well......
cheapjeep2 is offline   Reply With Quote
Unread 08-26-2010, 09:05 AM   #9
Gone Wild
 
cheapjeep2's Avatar
Club Car
 
Join Date: Nov 2008
Location: Peachtree City, Georgia
Posts: 1,529
Default Re: A heat problem or a short across the pack?

So after the OBC sat charging for 20 hours and not shutting off. I went ahead and replaced it with a new one for not knowing if I damaged it when I blew up the controller. Replaced it, and charging is working just fine. Found out some additional information that the owner had put it on the charger a bit before I picked it up. Charged the batteries drove for 15 miles with zero problems.

Other than the OBC being suspect, the only problem here is that the batteries were depleted, and with the gauge melted it was not working correctly.

So issues resolved.
cheapjeep2 is offline   Reply With Quote
Reply
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric Club Car


Thread Tools
Display Modes


Similar Threads
Thread Forum
excessive heat Electric Club Car
Heat Shield Gas Yamaha
excessive heat? Electric Club Car
harnessing the heat.. Electric EZGO


All times are GMT -5. The time now is 07:38 PM.


Club Car Electric | EZGO Electric | Lifted Golf Carts | Gas EZGO | Used Golf Carts and Parts

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.