How to use the scanner? Check engine light is on

Regarding the question of type of smell, yes, the odor does have a sulfur(ous) quality. Doesn't appear to be burning engine coolant. No white smoke, water vapor or dripping from the tail pipe, and no loss of engine coolant. During the first occurrence of the problem, the odor was very strong, but no engine light. Now there is just a slight odor with the constant engine light. Sorry for the late response. Been out of town. Thanks for the help.

Sporttracguy

After replacing the PCV valve, will the check engine light reset itself?

Engine light on rough idle dies at lights if sitting to long shakeswhen parked runs fine on highway