[InlineR]

Wondering if someone can help me out. I put a new throttle cable on my electric 36v 87 parcar. I bought it used with no batteries and the owner knew nothing about it.
I bought new batteries, cables, checked all the wiring fixed a few melted wires.
IT RUNS! however when adjusting the throttle I believe there should be 4 speeds I can adjust it to get to 4th but it just shuts off like I let off the throttle. is there something wired incorrectly?

any help or wisdom greatly appreciated as of now its pretty slow for an electric cart..

thank you