What will cause a 1993 Ezgo golf cart to run good when wheels are off ground and stall out when on ground?

SOURCE: need battery wiring diagram for 1987 ezgo golf cart

Tell me what cart you have and i can help. Not all carts get wired up the same way as this link demonstrates. In the pix pay close attention to how battery one gets hooked up as this sets the pattern

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SOURCE: golf cart smoking

It is most likely related to the rings, but running it would unstick them very fast if they were stuck. It's possible that sitting let rust develop in the cylinder walls and there may be some grooves in them now. They could also just be really worn cylinders. They make some oil conditioners which I wouldn't recommend on a car, but might work fine on a golf cart. I can't recall the name, but it was in a silver can, maybe called engine restore... You could always try that before resorting to a rebuild.

Testimonial: "thanks for your advice. I will try an additive before a rebuild."

SOURCE: Electric Golf cart only shutters and inches forward

so many possibilities...

does it roll fairly freely? (checking to see if the brakes or rearend seized up)

Are there any "bad" sounds like things grinding? (Connection between Motor and rearend, axle splines...)

If all that is solid, it is likely in the controller.... (it takes a solid charge right... No bad batteries in there or loose connection? might want to check all the battery connections to make sure none are burnt...)

1997.. does it have the electonic speed control by that year? the other possibilty is that the accelerator is not working corectly. they used a resistor system on old ones that has contactors that would get worn out.... Newer ones control a potentiometer(sp) that controlled the speed.

Only a few real components to check, but if you are not mechanically and electically inclined, could be tough to isolate.

peace,

SOURCE: I need a wiring diagram for a 1986 ezgo golf cart,

use this link http://www.vintagegolfcartparts.com/cgi-bin/gallery/gallery.cgi?func=show&file=200332&Category=100013&Page=1

SOURCE: EZGO golf cart won't go forward

Your batteries have died. The reason it will barely move in reverse is that current is being supplied to the motor is a direction that it spends very little time using. There is a slight change in the armature over time, and reverse tends to work better over time. Check the voltage when under load. (run jumper wires from the + and - of the battery bank. If it is a 36 volt cart and the voltage drops to below 36 volts, you do not have enoug current to run the cart. Plug in the charger and watch the ampmeter. If it goes up to about 20 amps, then it is charging. It should take a good charge after 10 hours. If the cart charges and only runs a short distance, the batteries need replacing.