EZGO Marathon Golf Cart Take Off Without Pressing Throttle

[CoolCart2010]

I purchased a 1992 EZGO Marathon golf cart. I have charged the batteries and cleaned connections. The problem I have now is that when i turn the key switch on the golf cart takes off without pressing the throttle pedal, also does it in reverse. It is a controller golf cart solid state. Where do I need to start to try to fix the problem? Thanks in advance.

 

[HotRodCarts]

It could be a couple things causing it. Does it take off at full speed? It could be wired wrong, bad pot box, stuck solenoid, bad micro switch, etc..

 

[CoolCart2010]

It takes off wide open then slows back down then you can use the throttle pedal for speed. It's like the batteries are trying to die after a few minutes. I removed the mirco switch above the pot box, it seems like its not closing all the way when screwed in. Also I removed orange wire from solenoid and put in forward and nothing happened. I removed the wire from solenoid and tested before removing the mirco switch. Where do i need to go from here?

 

[HotRodCarts]

Test the pot box by taking the two small wires off the controller on pin 2 and 3 and with a ohm meter you should see 0 ohms then slowly press the throttle pedal and the meter should smoothly go to 5000-5500 ohms max at full throttle.

 

[CoolCart2010]

The pot box is fine it reads 0 at rest and 5500 ohms at full throttle. Is there a way to bypass solenoid or should I just replace solenoid and mirco switch? Thanks in advance.

 

[HotRodCarts]

I'd check the micro switch first and make sure it's good and working like it should.

 

[CoolCart2010]

I picked up a solenoid at local golf cart shop. The solenoid i picked up has post on side instead of top. Could someone help me with the wiring to get it wired back up.

 

[HotRodCarts]

Just keep the wires together on the same posts as they are now and if there's a diode aim it at the same wires.