The coronary arteries regulate the supply of blood to your heart muscle depending on how much oxygen your heart needs at the time, as indicated by: 1  The number of times your heart beats per minute (heart rate). 2  Your blood pressure. 3  The force of your heart's contractions.  The thickness of your heart muscle.
When your car's Check Engine light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap.
Itâs typically not an emergency. Hereâs where thereâs some good news. Unlike some of the other lights in your car (your oil light, for example) that could mean a big problem if you donât address it right away, your check engine light rarely signals anything disastrous.