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Unread 05-19-2009, 08:25 PM   #11
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Default Re: 03 IQ nightmare

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Originally Posted by scottyb View Post
That's good to know..... I probably wasn't gonna let it runup that high but, I might. Trying to figure out if the obc is gonna shut her off or if it is fried. Shadow says some of the OBCs will not shut the charger off and will not let the cart run.... I'm not really OBC literate
Max charge should not exceed 16 hours... when I run my batt's down to 48.4 the charger will take around 8-10 hours before shut off. It hangs at low amps at the end to help equalize all the battery voltages.
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Unread 05-19-2009, 08:26 PM   #12
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Default Re: 03 IQ nightmare

Yeh that's it! I did figure out it was on the negative side and there is a junction blick on the out side of it then a neg from that goes to a neg fuse panel for all of the extras... But it has full power going into it? I thought they only reduced 16 to 12v .... thank you Ox.

So much of this cart is not right
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Unread 05-19-2009, 08:26 PM   #13
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Default Re: 03 IQ nightmare

Just went in garage and looked at my reducer---2 wires, 1 black and 1 gray. The gray gets hooked to the accesory ground wires, and the black gets hooked to the battery neg. post. and this thing does get hot--so make sure its mounted accordingly.
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Unread 05-19-2009, 09:48 PM   #14
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Default Re: 03 IQ nightmare

Okay that helps ....mine's a mess no wonder they melted stuff. I disconnected the reducer
Still have a dead short to the frame..... must find stupid grounding wire
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Unread 05-19-2009, 10:49 PM   #15
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Default Re: 03 IQ nightmare

ok on reducers, some are 16 volts to 12 some arre 24 to 12 some are 48 to 12 and they are alkl wired in different ways...............some get wired to controller some don,t its just 1 wire in and 1 wire out but even it shouldn,t be grounded to frame, i have seen more than one bad OBC that wouldn,t let a charger shut off even after time maxed out these things charged 48 hours or so and just boiled the batteriesand again some carts would run while other wouldn,t move and vice versa........they started getting more complicated in 99 and they can be a real poain cause up to that point if a customer came in and said my cart won,t run or charge but my charger works on another cart you knew it was the OBC but not anymore.......................................the way i see it now is you have 2 identical carts in every way that have the same exact problem but 2 entirely different fixes..........................
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Unread 05-20-2009, 08:12 AM   #16
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Default Re: 03 IQ nightmare

One place to look for grounded frame…

My 06 Precedent came with the frame grounded from the CC dealer. It turned out the turn signal assembly was the culprit and I just wrapped electrical tape around the column where the clamp held the assembly in place. It had its own ground wire anyway so blinker lights in the assembly still worked along with everything else.
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Unread 05-20-2009, 09:14 AM   #17
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Default Re: 03 IQ nightmare

SCOTTYB to save yourself alot of sleepless nights and huge quanitys of beer and or Jack Daniels forget the accessories for now and get the battery pack up and running. I like you hate the OBCs as it has way tooooo many wires going everywhere for my liking? I would like if the time comes when I have to replace my charger am going with a automatic charger and tear all the OBC wiring out.
Dont bother with a voltage reducer just get yourself an extra battery and charge it from a 12 charger as needed. I use an extra battery from my handicapped scooter, new $50
( UB-12350 ) and as its small and can be place in any position it works out great. For my use I only charge it twice a month through a power plug ( HD Mariine grade) in that I mounted in my dash. Battery reducers draw from 2 batterys or a better one draws from the whole pack and here lies the problem? When you hit the pedal the voltage drops so low that lights dim out and worse yet radios etc that are voltage sensative are in danger of burning up????
For your battery pack problems use a hydrometer and when each cell show 1.270 stop charging. I have used this method since I was starting out in the automotive field and it has always work correctly. Of course when I started there was NO AUTOMATIC BATTERY CHARGERS. The only problem now is most batterys are sealed.
SCOTTY remember there should ( NEVER BE VOLTAGE TO ANY ELECTRIC GOLF CART )
If the batterys are clean and dry you shouldnt have any reading at the frame? If you do the reducer that you have could be the problem or incorrect wiring is more likely.
WHAT AM I DOING YOU KNOW ALL OF THE ABOVE????????????
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Unread 05-24-2009, 04:30 PM   #18
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Default Re: 03 IQ nightmare

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Originally Posted by scubabud View Post
Might sound high but my IQ goes up to 64 volts before kicking off. Then runs down to 54 real quick, floats around 53 for a while then 52 for a bit before setting in at 51.3 24 hours later 51.1 They are 6 month old Trojan T-1275's though.
Just for future record

I am charging my cart now and took a few pictures of the voltage and amp gauge after around 5 hours on the charger. The pack had around 50 volts before the charger was put on. The voltage now is fluctuating between 63.5 and 63.8 and the amp gauge is around 3.5 to 4. (Charger is a PowerDrive 2)
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Unread 05-24-2009, 10:15 PM   #19
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Default Re: 03 IQ nightmare

I've seen mine hit 60v, I usually charge at night and it is normally done when I get up in the mornin. Wish I could be of more help.
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Unread 06-12-2009, 10:52 PM   #20
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Default Re: 03 IQ nightmare

FInally the NEW Factory controller arrived today, I happily installed it...and my happiness ended.. THe cart runs a little... it runs up to about half speed and drops out, coasting for a second then while you hold the gas steady, the power comes back on and it runs up to the same 1/2 speed and cuts out for a moment and goes some more ... on jack stands you can clearly hear it cut in and out as it does this? Disconnected the speed sensor and it does the same thing except with the speed sensor plugged in the reverse buzzer beeps when it cuts out and goes.... THis is something I have never seen before and I think it is key to the problem?
Here is what we did today with out any improvement....
1. install new and then known good controller
2. install new MCOR
3. Disassemble motor for inspection and reinstall
4. test charging cycle
My IQ Nightmare continues.....
In the AM I will change the OBC....... Right here I need the little smiley who is pulling his hair out
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