Asked in Mercury Grand MarquisCheck Engine LightFord F-150
What does it mean when the check engine light goes on?
December 09, 2009 2:55AM
This means you have aload of miles and you have to go to the
mechanic or you will fail a transmission test. Sometimes it stays
even when a mechanic tries fixing it good luck.
Good news scenario
On Kias and Volkswagons (and maybe others) this light comes on if you don't screw the gas cap on tight enough. Try it, it saves a pile of bucks for having the mechanics check and replace the "thermin wire" or "muffler bearings" (and tighten the gas cap)