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I had this same problem, the check engine light came on as well as the fuel light with ample fuel still in the tank, turned out that the VM value was bad, or vapor managment value, so it doesn't just have to be the engine can also be fuel system problems.

AnswerGO TO AUTO PARTS STORE ASK FOR OBD 2 READING ON YOUR CAR. THAT WILL TELL YOU WHAT IS WRONG.
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โˆ™ 2011-09-14 00:07:56
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Q: Why does the check engine light keep coming on in the 2002 Ford Focus?
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