The flashing of the check engine light of the 2004 Ford Ranger is indicative that un-burned fuel is being released from the exhaust. The flashing is also a symptom of a fault in the catalytic converter of the car. If Your check engine light starts to flash, then You should head right to an expert auto electrician and get the problem diagnosed with the help of an OBD scanner, and get the issue repaired. If the check engine light stays illuminated after flashing, it can also be an indication that the regular maintenance is due. If the issue still persists after getting the maintenance done, You should get a complete OBD diagnosis to avoid any further damage.
Mary E
July 16, 2020
If the check engine light on the 2004 ford ranger is on then you may have a couple off different issues. Realistically it can come on anytime the ecu detects and error and stores a trouble code. To check the code you will need to hook the vehicle up to a obd scanner and read the code. The light can also come on when you are approaching a service milestone. Issue that cause it can include a loose gas cap, leaks in the vacuum seals, engine misfires, low oil pressure, bad spark plugs, or really anything else. The check engine light is a catch all to alert you that something is wrong, but that something can cover nearly anything on the vehicle. Often it is minor, but it should not be ignored.
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