Why does my check engine light start flashing.It runs terrible when its on but it quits flashing after a mile or two. Then it does it periodadicaly

Asked by Feb 23, 2016 at 08:46 AM about the 1999 Ford E-150 STD Econoline

Question type: Maintenance & Repair

1 Answer

122,515

Flashing check engine light is warning you of the potential major damage to vehicle if continued operation. Turn off ASAP. Have check engine codes read and post them back on here. These will give us clues as to where your issue is.

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