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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV.

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Unread 01-21-2009, 10:06 AM   #1
Getting Wild
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Join Date: Sep 2008
Posts: 117
Default EZ Go No go again....arg

Well, on the '97 EZ go I brought back to life after a rollover I heard a pop. It could have been a short or maybe it had nothing to do with the ears don't work well when its that cold out. This is a '97 non PDS and the entire inside had been covered with battery acid. I am working on it for a freind for free and driving it around when I need to in exchange. So I am not diggin into it like I should. I got the cart running after cleaning the connections, tearing the motor down and fixing the magnets, replacing a couple of torn wires and this thing was great.

Simptons after the pop:
No go....selonoid clicks when the pedal is depressed. Battery guage shows low voltage even though it was just charged. Actually batter voltage from posts is 37.0 volts (36 volt cart). I wanted to test the controller so I first checked the output power from the selonoid. On the output side with pedal not depressed and the ground from the multimeter on the negative post I get a flopping voltage that settles at like 190Volts!!! I depressed the pedal and get a normal 37 volts matching the battery. Ok, this makes no sense. I then test test the A1 and B1 (i think one says positive and one says negative) and get the same crazy thing until the pedal is depressed when it goes to normal. I am not sure how to test the M side but I assume another step is to test the voltage at the motor, but haven't looked at the diagram yet to see where I would expect voltage depending on direction. Also test the two 14guage or so wires to the selonoid that switch it and when pedal depressed its the same crazy voltage. Doesn't make sence. i would think the output side of the selonoid would show 0 when the pedal is not depressed. So then I notice a sizzling sound when the pedal is down. We use a scope (sound scope) and decide its the controller making the sound. Nothing looks to be burning or getting hot but it still makes a sound like sizzling.

I am assuming controller but before I tell the guy I wanted to do somemore testing and understand why I am getting that crazy voltage. Any ideas?
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Unread 01-23-2009, 07:20 AM   #2
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Join Date: Jan 2009
Location: capitola,fl
Posts: 7
Default Re: EZ Go No go again....arg

Check On Sticky Pages He Has Some Wiring Diagrams And May Have Some Test Procedures
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