don't ad zip ties, that's a half assed fix, all mopar engines have throttle cable adjustment
with the engine running, loosen the lock nut on the throttle cable on bracket on the intake
, pull back on the cable case until the car starts to rev up a little, release it some so you get normal idle but the cable is still tight and tighten the lock bolt, confirm you have full pedal travel
if you don't check to make sure the carpet doesn't have a crease under the gas pedal, and the spring on the gas pedal isn't broke allowing the black plastic piece foot rest to flop on the metal pedal assembly