Hyundai Repair Questions? Ask a Mechanic for Answers ASAP
Thank you for your question. My name is Steve and I am a fully qualified vehicle technician with over thirty years in the trade. Hopefully I can help you.
My first reaction would be that no the throttle pedal should not stick near the bottom of its travel, it should be smooth throughout and return immediately when released. However having said that the accelerator on your Hyundai is a fly by wire system and has no mechanical connection to the engine, the accelerator transmits a signal to the ECU which then controls the speed of the engine.
These throttle pedals do have a spring at the end of travel and that may be what you are feeling, but even with this the throttle should return as soon as its released.
The buzzing sound may be an indication that the electrical connections within the pedal mechanism are failing and I would advise getting this looked at as soon as possible.
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Its actually a problem which has been found on quite a few different Hyundai models.