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Cheak engine soon light keeps flashing - 2003 Mercury Mountaineer

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Is the car missing or not running quite right, have a little more wiggle to it? Flashing check engine light is usually indications of a cylinder misfiring which could be caused by a few different things.

Posted on Aug 05, 2010

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Posted on Jan 02, 2017

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My trailblazer was ibeling then it died when I started it up it was missing and service engine soon light flashes on an off none stop


Your vehicle has a bad misfire that could damage the catalytic converter. That's why the service engine soon light flashes . If you drive it like that it will damage the cat. Have towed to the repair shop . Flashing Check Engine Light CarMD

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Will this problem stop your car from running or stopping


The service engine soon light flashing means if you continue to operate the vehicle in its current condition imminent damage to the catalytic converter or the engine itself

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No codes just service engine soon light


Many codes can't be read with a generic scanner.. the cheak engine light can be on for a computer problem that the computer can't display codes for some reason. Power can be shorted to the check engine light wire and put it on for a non computer issue. ( someones wired in a radio and got into the wrong wires)

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'low coolant light' flashes all the time and then 'service engine soon'


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You need Error codes clearing on engine Otherwise it will play up to keep letting you know there is error codes that need attention

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