Question about 2002 Buick Century
Check your exhause smoke. If it looks like steam, then more than likely you could have a blown head gasket which would make the lights come on. If there is no steam in the tail pipe, then check your oil to see if it looks milky after the car has been running for a while. That means you have water in the oil. This could mean you may have a cracked head. If these things check out ok, then I would find the leak for the coolant.
Posted on Mar 24, 2011
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Posted on Jan 02, 2017
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When the Check Engine light (or Service Engine Soon or small picture of an engine) is turned on, the systems computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine and/or the emission system. When this happens you will seldom feel the car engine run any different. There are about 200 possible system faults (the gas cap is just one of them) that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen/Oriley and Autozone parts stores (USA only) do this testing for free.
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