Question about 2000 Hyundai Accent

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2000 accent keep getting check en light on codes 300, 303

The check engine light is on it says its miss firing but i ve done allmost everything changed plugs wires coil oil and coolant did a compresion test and good all around 170ish ecept cil #3 was 90 the light only flashes when at idile then gose solid when rpms go up

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  • shoop006 Mar 04, 2009

    wouldnt that send a code also i changed the packs all ready

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  • Here are the most common causes of a ,misfire.
  • Base engine mechanical faults (valve train faults, excessive carbon buildup, low compression)
  • Air Intake system is restricted, or there is a restriction in the Exhaust system
  • Fuel pressure problems (fuel pressure is either too low or too high)
  • Faulty fuel injectors (leaking, restricted or dirty fuel injectors)
  • Faults in the Ignition system components and wiring
  • Faults in the Ignition system components and wiring
  • Vehicle driven while low on fuel, or it was run completely out of fuel
The light will flash if the PCM detects a misfire that could result in damage to the Catalytic Converter so driving the car with it flashing could cause more problems.

Hope this helps,

Dave

Posted on Mar 04, 2009

  • Dave Real
    Dave Real Mar 04, 2009

    Trouble code P0342, Camshaft Position Sensor (CMP) . Most of the time it will cause a no start, a hard start, or a poor idle. I would need to know the codes that are turning on the light to give you more help.



    Dave

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Try having the crank sensor tested and the coil packs hope this helps

Posted on Mar 04, 2009

  • Jeremy Lamb Mar 04, 2009

    try having the crank sensor tested and the coil packs hope this helps

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