My 2007 kia spectra check engine light is on. It will come on and then turn off. sometimes my car wont turn on and i have to lift the hood and wingle the screws on the battery and then my car will turn on. But ever since i tighten the screws on the battery it has not been doing that anymore. But the engine light is still on. what could the problem be?
The information below was complied by me, it explains what causes the check engine light to come on and the process of finding the cause.
When the Check Engine light is turned on the 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 faults 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 and Autozone parts stores do this testing for free.
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normally you can disconnect the battery for a while and the computer will reset to defaultmode. if the same problemexsit then there is a sensor out
Replace the upper stream sensor then disconnect the battery and run the car for 100 miles and finally take you car to any auto-parts stores and have them connect a Auto Diagnostic Tool.
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