In a nut shell, there is gas that is getting to far unburned. There is damage being done to the Catalytic Converter. Get it fixed asap. Cats are expensice, not to mention the beating your fuel mileage is taking.
It is important to know why a Check engine light blinks. In many cars, when it blinks so many times, it is indicating a code, which is indicating the problem number for the specific car.
have vehicle scanned to determine the problem
If your check engine light is blinking with the engine running that is indicating a misfire - get your vehicle scanned for any trouble codes to diagnose and then repair the problem
get it checked, because if the ligt blinks, something is wrong.
you should check your engine...like now...
If the check engine light is blinking that means an engine cylinder misfire has been detected
A blinking check engine light indicates an engine cylinder misfire has been detected
my check engine light stays on and the o/d light blinks....what could this mean?
If your check engine light is blinking , an engine cylinder misfire has been detected The vehicle needs to be scanned for trouble code(s) to diagnose and then repair the problem
cycle the key three times and count the blinks of the check engine light
Numerous things could cause this problem. Most of them are nothing to worry about. As long as you are talking about the AMBER "check engine light"... Since it blinks, I would check with a Dealer first. The blinking indicates a possible future problem. Once it is steady, the car has identified a problem. One thing to check... Make sure the gas cap is tight!!! No idea how the car runs or idles, so difficult to figure...bring it in.
The computer does tests as you drive the car. It has found a problem in a component and is telling you about it. You will have to check for sure but it sounds like code 23 possible Air flow metering problem.