Question about Hyundai Motor 2003 Sonata

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03 hyundai sonata camshaft postiton sensor circuit malfunction

We had just replaced our alternator in our car and when we got it up and running again i noticed that it just wasn't driving right about 2 days later my car broke down. Our friend came over and hooked up the computer to our car and it came up that we had a camshaft sensor circuit malfunction. We tried a good camshaft sensor in it and still got nothing. Im not sure were to start looking to fix my car. I've had horrible luck with mechanics on my car so I'm not sure if this is one of those things we could be able to fix ourselves or if we should just take it to a mechanic. Do you have any suggestions on what else i could check to maybe get this problem fixed?

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  • Anonymous Feb 18, 2009

    I had my timing belt replaced recently and when I picked it up from the mechanic, it wasn't running smoothly at all. The mechanic insisted that the shaking and hard idle would go away with time. When a month later it broke down again, like yours, showing a camshaft positioning sensor problem. After that was completed the car still idled very rough and would stall out as soon as it heated up. I founf out that when the first mechanic fixed my car, he didn't notice that the camshaft was broken by the timing belt and he also didn't replace the balance belt properly which was causing that idle that he ensured would go away.

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Take it to a dealer, cheaper in the long run that going to "just any mechanic"

Posted on Jul 24, 2009

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Code p0340


P0340 Hyundai - Camshaft Position Sensor 'A' Circuit Malfunction Bank 1 Or Single Sensor Possible causes
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- Camshaft Position Sensor harness is open or shorted
- Camshaft Position Sensor circuit poor electrical connection
- Faulty starter motor
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Read more: http://engine-codes.com/p0340_hyundai.html#ixzz338zFujgZ

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