I was wondering why my car sputtered at idle. Its not violent but you can feel the car shaking! What could this be

bump

 

Need a little more info for people to help. How often is it? have you done any mods recently?

 

I mean it doesnt do it ALL the time but it does it often at random times. And nope no mods recently done

 

What's it idling at? If it's too low it will sputter.

 

its idles normal at 800 give or take. It doesnt sputter like its missing. It vibrates. Its like a hesitation type thing its hard to explain. I was thinking maybe it was my spark plugs, but i swapped em to a step colder and its still doing that same thing

 

try cleaning the throttle body, it gets pretty gummed up

 

spray some cleaner into it?

 

https://www.cobaltss.net/forums/show...ight=idle+cure

it's not hard to remove, just four bolts and an electrical connection (which you really don't have to disconnect)

then soak a rag with the cleaner and wipe all the gunk off and put it back on.... takes 10 minutes tops.

 

O ok and what's it called" throttle body cleaner?

 

yup.... don't get carbeurator cleaner by mistake

 

it wipes right off without cleaner too.. but my car does the same thing.. im assuming its normal-ish lol otherwise just check for any vac leaks.

 

I mean do vac leaks just happen?