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Message: <blockquote data-quote="AuroraGirl" data-source="post: 22235" data-attributes="member: 9417">the MAP sensor is required for MAF rationality checks. The MAP sensor has an  O ring that doesnt fit all that tight, remove the MAP sensor and check out the o ring on it.  I had a bad MAF sensor, the sensor still read but it increasingly lagged behind what it should have been based on the new ones readings, it would periodically throw a code but it would operate startup usually just fine.   no check engine light DOES NOT mean no codes.  So no offense but you need to put a scan tool to it.   there also a TSB for oil burning in cold climates that see freezing temperatures, that amount of oil burning is excessive, and it replaces the oil cap on the passenger valve cover.  The cap incorporates a relief so if the PCV line is frozen it vents excessive pressureThe new valve cover, and this , would be wise in a cold place.  But the valve cover is the biggest part.  If its burning oil such that its constantly sucking liquid Oil, that will definitely cause driveability issues. but the catch can should be minimizing that</blockquote>