3 Wheel EZGO 36v Electric Cart

[3wheelingfool]

I tried to see if the speed selector wiper arm was going all the way back and it looks like it does.

What role does the microswitch down by it serve? When it returns to it's resting position it enages this switch. Something is allowing enough power to reach the motor to engage it at a very slow speed. On the other hand when the pedal is pressed the cart takes off very quickly.

[rusty]

Welcome to the forum 3wheelingfool..............

[pggroves]

There are 3 MS in that system Two on the FNR and one on the accelerator switch aka speed board. The speed board MS is normally open at throttle 0 and normally closed at accelerator positions 1,2,3, or 4. Make sure it is functioning properly (as well as the two on the FNR). The speed board MS is part of the solenoid control circuit.

I still urge you to get a schematic and trace and confirm all wiring. Sometimes when you're working with an unknown (i.e. you don't know what others have done before you) it might be better to "erase the board" and start fresh.

Maybe this wiring diagram will get you headed in the right direction. It may not be the "exact" one for your cart but I guarantee you it will make your resistor coil system cart run as it should.

HIH and good luck.

[roady89]

Originally Posted by 3wheelingfool

I tried to see if the speed selector wiper arm was going all the way back and it looks like it does.

What role does the microswitch down by it serve? When it returns to it's resting position it enages this switch. Something is allowing enough power to reach the motor to engage it at a very slow speed. On the other hand when the pedal is pressed the cart takes off very quickly.

Depending on which micro it is....one is for the reverse buzzer, one is to kill control circuit power while switching from forward to revere or vise versa, another activates the solenoid. Also, they all work in series to activate the solenoid.

It could be a couple different things, bad micro, miswired control circuit, miswired power wiring, throttle pedal down partially. The solenoid could be stuck also. (no you can't use a car or truck solenoid.) The last contact on the wiper board doesn't get a cable either, it could be that......many things. Get a wiring diagram and study it, your a fool if you don't, and if no ones mentioned it yet you need a volt meter.


One other thing, Just because the solenoid or a micro clicks doesn't mean its good. Thats one reason you need a volt meter.

[3wheelingfool]

Help!!!! I have fallen and I get get up. Well that is how it feels with this project. I have looked on the web and can not find a diagram that is exactly like my cart. They are all close. I have a F&R swith that has only one microswitch activated by a cam with two notches. I have a reverse buzzer, which some diagrams on this site do not show. I seem to have too many wires going to the speed control swith assembly.

The solenoid that I bought is not exactly like the one I had on the cart that went bad. The parts guy said any 36 volt solenoid would work.

Here is where I am. It goes forward, but not backwards. When I try to go backwards as soon as I swith the F&R to R the buzzer sounds. I press the pedal and the buzzer stops. Here are a few pictures. Forget wire colrs, because nothing on this cart is color coded. I have to trace pont A to point B. Sontimes it seem like I end up at point C. Go Figure!!

[3wheelingfool]

Here's to this project!!!! Sorry I just need to vent my frustrations!!!

[71chopper]

on ur solenoid , they are not all the same ,automotive solenoids activate from one small terminal to ground, the other small terminal is hot like the large terminals while the solenoid is energized, it was used for resistor bypass on old ignition systems, I have the same cart and the cart solenoid activates between the 2 small terminals, u might b backfeeding some voltage somehow ,the reverse buzzer only sounds until u press the peddle on my cart also ,make sure no one has run a extra ground wire to the frame, I can try to get a few pics but it will b a day or 2

[Otter70]

IMHO, if I had your cart I would rip all the wires out and rewire everything new. You'll learn alot and you'll know what you have. I did this to mine and I know that it's Right! Get the schematic for the year and type of your cart and jump in........It's fun

[3wheelingfool]

71Chopper,

Any pictures woud be most helpful and possibly a schematic of this cart instead of ones that are close. If the pictures you post of your 3 wheel cart help me get this thing running I will send you a gift that only 3 wheeling fools like us would enjoy.

I started this project because one of the battery terminals was getting so hot it meleted the botton of the seat trim. I noticed the batteries were not wired according to all of the diagram I saw. But that is were the problems all began, none of the diagrams I found match my cart exactly.

I have replaced the solenoid, the resiter, the diode and the microswitch on the speed control assembly. I have an ignition switch omn order as well.

The solenoid I bought was a 36V one for a different brand of cart. The service guy said it would work.

I really am not ure of the year of this cart. The guy that sold it to me said 87 or 88, but someone on this forum said 78. What year is you 3 wheeler? Am I to asume it is a 71 hence the name 71chopper?

I look forward to your pictures, including the battery cable layout. If you want you can call me at 765-717-0940 with tips or advice on 3 wheel carts. I live in Indiana.


(Merry Christmas to all)

[3wheelingfool]

PHP Code:

IMHO, if I had your cart I would rip all the wires out and rewire
 everything new. You'll learn alot and you'll know what you have. I did this to 
mine and I know that it's Right! Get the schematic for the year and type of 
your cart and jump in........It's fun 


So where would I find an exact diagram?

I have 1 microswitch on the F&R wich is activated by the CAM and 1 microswitch on the speed control assembly. I have a reverse buzzer. No diagrams evre are exactly right.

Any suggestions would be welcome!!!



(Merry Christmas to all)