Question about 2003 Kia Rio

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Ihave a check engine light problem..i`ve changed the plugs wires-coil pack.nothing helps it`s gotten worse the car will start to backfire and stall...any suggestions?????don

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Did you go to Auto Zone or another shop and have the fault codes read withe the code reader? This sounds like your ECM has switched to Limp mode which is designed for limited use to get you to a chop for repair. Most likely it is a Faulty O2 Sensor but the Fault codes will tell you for sure in most cases.

Posted on Oct 16, 2010

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Ok! i have periodicaly light check engine 0303. Sparks , high voltagewires is new. Mechanic sad, engine is Ok.4 injectors is OK! May be contact of 3-injector from computer? Where is place of computer place in car ROI 2003?

Posted on Dec 03, 2010

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My 2001 is really missing backfire bad misses when u give gas already changed coil pack stopped a lot but still acting up and answers


Hi there!

Could be a bad fuel pump or bad TPS. Throttle Position Sensor. Does the check engine light comes on ?

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hello there my friend, these cars have a lot of problems with the coil pack, its the complete cover above the cams/valve covers, these area is very hot and these coil pack is from a plstic material so it often cracks and spark starts to escape all over from the inside part so it fails to fire the cylinders and stalls or hesitates, these condition gets worse under load, most times you can hear the spark jumping to a close ground or visualy inspect the coil pack for cracks or burnt traces replace it if you see these symptoms, good luck

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First is there a charge for this service advise?


It sounds like an ignition problem. I would probably replace the plugs and plug wires first (I suppose they need replacment anyway). If that does not help, check your coil packs (the black boxes that the plug wires go into on the back of the engine - I think the 1990 had direct ignition system [DIS]), if not, replace the distributor cap and rotor button. Also, check the ignition timing.

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