check engine light flashing on 1997 Dodge Intrepid

just replaced alternator and now check engine light is flashing.car is shaking.could this be from improper installation or some thing else.before alternator was replaced car was not turning on even with brand new battery.

Asked by for the 1997 Dodge Intrepid
If your Check Engine Light is flashing, that means that you have a severe misfire, so make sure that all of your spark plugs, and all of your vacuum lines and air intake hoses are as they should be.

here is an article on Check Engine Lights and what they can meas look at the last section where it explains why the check engine light will blink or flash on and off.

http://repairpal.com/understanding-the-check-engine-light
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