Question about 1998 Hyundai Elantra
Went into a movie the other night, the car was running just fine. Turned the lights off, battery is A-OK. Plenty of oil in the car, when I had a friend look at it he decided that it wasn't mechanical. So I'm wondering what electrical problems could be cutting my car off after a second of running.
Your car may have an "immobilizer" which is part of the security system. It will start and stall if someone uses an "unauthorized" key to start it. In other words, a key that was not programmed by Hyundai or the dealer to run the engine. This happens if you had repairs done and immobilizer was interrupted and all keys were not present for programming and you're using one of those keys perhaps and sometimes it just loses its frequency. These systems often have a different frequency each time they're coded so all keys must be programmed at the same time every time. Sometimes the immobilizer coding process is simple and included in the owners manual...NOTE: this could be an indication of a bigger problem if it keeps happening.
Posted on Sep 16, 2008
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Posted on Jan 02, 2017
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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 (or Service Engine Soon) 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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