Question about 2005 Hyundai Sonata

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Check engine light stays on.

I have 05 hyundai sonata v6. Had battery and alternator checked a month ago and was told the battery was bad, so I replaced the battery has more power,from 600 to 825. I was also told that the 825 would be a better battery for the car. Car drove finr for a month. Now the check engine light comes on upon starting the car and missing, if it idles to long ( 1 min) it cuts off. Please tell me whats going on and is it very costly?

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  • Anonymous Jan 10, 2009

    I JUST BOUGHT A 2005 HYUNDAI. REALLY NICE CAR BUT I TOOK IT TO GET THE OIL CHANGED AND EVER SINCE THEN THE CHECK ENGINE LIGHT HAS BEEN ON. SOMETIMES HARD TO START AND SOMETIMES THE ENGINE MISSES.

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Can't really guess with these car the computer that puts on this light is very sensitive and is very accurate. Here is my suggestion take your vehicle to an AUTO-Zone they will check why the engine light is on for FREE. make sure you get the code or codes and their meaning and get back to me if you need more help. Good Luck

Posted on Dec 27, 2008

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How do you know if alternator is bad on a 2006 hyndai sonata v6


Using a volt meter check the voltage at the battery with the vehicle running. There should be more than 13.5 volts. If it is more like 12 volts or less that the alternator is not working or there is an open between the alt and the battery. The most common cause of the battery light is a bad alternator.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

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Loose wire connections must be checked first.
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