carbon buildup around the very edge of your throttle butterfly CAN give this issue. It gunks up and prevents smooth operation of the throttle butterfly , throttle cable and thus accelerator feel.
fix by
take off intke arm.
get a old tooth brush. get a spray can of carby cleaner. leave the engine OFF
get a friend to depress teh accell. to full throttle (WOT) and then spray a few sprays into and around the throttle body and throttle butterfly. Use the tooth brush to scrub in and around the throttle body too. After a good scrub , spray a couple more times and let it sit for a few minutes to dry. Wipe out with a clean cloth to remove excess if need be.
reinstall intake arm , start car. It may need a couple of turns t get going , normal. It will chug alittle but will become normal again in a few minutes of idle.
