Posts Tagged: Can a bad battery cause a misfire?

How a Bad Battery Can Cause Misfires in Your Car

A bad battery can cause misfires and all kinds of other performance issues The power requirements on older cars was quite low. The ignition and fuel system didn’t draw much power. But it’s a whole different story on newer cars. A C.O.P. ignition system, for example, uses up to 6-amps per coil at highway speeds (4 cylinder engine = 24-amps). The fuel injectors use 4-6-amps each. The electric fuel pumps use up to 12-amps. And that doesn’t even count the power used by the ECM, ABS, electric power steering, radiator … Read More