Check engine light flashes when stress is put on engine, chugging at idel and driving...
Although the check engine light goes off, the code is most likely still locked in. stop by your local advanced auto parts, or mechanic to have them check it out.
SOURCE: CHUGGING ALONG WITH FLASHING CHECK ENGINE
A flashing Check Engine light means you have a ignition Misfire, start by replacing the spark plugs and spark plug wires, one or more is defective. If you have a electronic engine control fault code reader the cylinder or cylinders that are misfiring will set a fault code, the codes are P0300-P0306, the last number being the number of the cylinder ( cylinders 1-6) the computer has detected a misfire in.
SOURCE: 2001 ford expedition
the same thing happen to mine twice,and both times it was the coils ,You have 8 total ,one over each spark plug.I replaced them and no more problems.Check with the auto parts so they can tell you which one is bad,hope this helps...
SOURCE: 2003 expedition airbag light on
You might have a Bad Airbag Sensor. Is it cold where you are at????
SOURCE: Reset the check engine light on 2005 Expedition
you have to take it to a shop to have it reset. if it tripped, it means something isn't working right, and that often leads to lower gas mileage if it isn't fixed, costing more money in the long term
SOURCE: 01 taurus v6, chugging @idle & acceler. engine light blinking
Drop in to autozone, or Pep boys and have it scanned, free, for trouble codes then go from there. Could be something simple & cheap
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