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Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!

03 Hyundai sonata 1.6 po340

  • chief eaglebear
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5 years 5 months ago - 5 years 5 months ago #39380 by chief eaglebear
03 Hyundai sonata 1.6 po340 was created by chief eaglebear
Hi does anyone have a wiring diagram for cam sensor I have a po340 and a po300 but I'm thinking i should fix sensor problem first and misfire might go away this vehicle also had an interlock Devise on it and I'm not sure how that wires into starting system thanks there is misfire on engine battery voltage seems ok and starter motor worked fine
Last edit: 5 years 5 months ago by chief eaglebear.

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5 years 5 months ago #39383 by John Curtis
Replied by John Curtis on topic 03 Hyundai sonata 1.6 po340
By any chance are your lights flickering? Like headlights or interior lights? I’ve seen several Hyundai’s have problems with a bad diodes causing both codes due to excessive AC ripple. Not saying that is your problem, but you could quickly identify AC ripple on a 2V scale with 10 ms per division. A bad diode would be .5v AC peak to peak.
Making Pressure Differential Sensors (PDA Sensors) for pressure pulse diagnostics.
Currently servicing Central Texas.
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