I don’t know how EZ-GO cart are wired or fuel pump components? You will probably have to find wire diagram (or follow wires) and have multi-meter to have chance to figure it out if you don’t want to pay someone.
First thing I would do, check wires for chaffed and metal to metal contact, see if wires run anywhere close to gas pedal, linkage or cable. Check grounding points.
Without wiring diagram I have no clue how it’s associated with gas pedal unless the gas tank wire runs near the pedal system and got tangled?
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