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Question for the mechanics

So my car runs fine while I'm driving it. I noticed when I rolled my windows down if i have the car in park or pushing on the brakes there is a rattling and soft but noticable sputters. Its only when my car is idling! What could that be?
Hyaundai elantra 2016

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Beatbox34 · 31-35, M

It's the plastics inside your interior. Could be a dashboard or anywhere.

I get absolutely irritated by them. The simplest solution for them is to isolate the area and figure out where it's coming from. Then use a double tape to cover the gap and absorb the vibration.

Justmeherek · 31-35, F

@Beatbox34 I mean there is a little bit of vibration but it's mostly some sputtering. I don't think plastic would make my car sputter. Vibrate yes 🙃

Beatbox34 · 31-35, M

@Justmeherek I didn't read the sputter part.

Are you able to rev the engine freely? Could be damaged injectors that may cause misfires in the cylinders.

Get the car checked for error codes.

Justmeherek · 31-35, F

@Beatbox34 yup I rev the engine and everything sounds and feels good. I've been to the dealership twice in the last 3 weeks so if it was something major I would have hope they caught it but a few days after I got it back I started to feel the sputtering/ very small jerks while at stoplights.

Beatbox34 · 31-35, M

@Justmeherek I want to say it could be the clutch but I have never driven an auto.