first, check the computer codes. If that doesn't show anything, check the air filter and egr valve.
This could cause an earthquake.
Sudden tiredness could be caused from over exertion, low iron or low blood sugar. If the problem persists, consult your physician.
It could, yes.
an ice age
low blood sugar
poor feeding and sometimes it's normal
Yes it certainly could cause bad gas mileage especially if it is plugged up or if your car's oxygen sensors readings are faulty.
Signs of indicating sudden emotions include changes in facial expression (such as wide eyes or a furrowed brow), changes in voice tone or volume (like raised pitch or yelling), increased heart rate and breathing, and physical movements (like pacing or fidgeting). Other signs may include sweating, blushing, or sudden changes in behavior.
A worn out, tired, high mileage or abused engine could cause low oil pressure.
If it now works it could be a bad connection to the sprayers.
A faulty fuel gauge sending unit in the fuel tank could cause that.
Start by checking the fuel pressure.