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our kia carnival 2003 simply does not start every time,one day everything is ok,but tomorrow morning you cannot get it started. the battery is ok. does anyone have similar problem,please
 

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Yes. Mine will start with the aid of power start. Then when running on acceleration the engine management light comes on intermittantley
 

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KIA Sedona 2005 EX 3.5L Automatic
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our kia carnival 2003 simply does not start every time,one day everything is ok,but tomorrow morning you cannot get it started. the battery is ok. does anyone have similar problem,please
Check your Mass Air Flow sensor, try spraying it. Camshaft sensor could be on its way-out too
 

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KIA Sedona 2005 EX 3.5L Automatic
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Yes. Mine will start with the aid of power start. Then when running on acceleration the engine management light comes on intermittantley
Have your battery checked. If it starts when jumping the car, means your own battery does not have enough "umph" in it to do it by itself. How old is battery? Do you mean that the CEL is flashing when you say "engine management light comes on intermittently"? That's indicatation of misfire. How does the car drive, normal? If you have misfire you will have raw fuel going-down the exhaust and it will kill your catalytic converter. Get this fixed. Check your spark plugs (when were they changed last time) and coils, start from there. Also check your MAF and Throttle Body (clean both).
 
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