Question about 2004 Kia Optima

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Car will start but dies after about 10 minutes. Will restart after about 5 minutes but dies again after running a minute. Replaced fuel pump, fuel filter, attempted to clear codes by disconnecting battery, check engine light was on when running but after disconnecting battery the check engine light is no longer on. Checked the wiring harness in fuel tank, all connections are good. When the key is in the on position there is a buzzing noise that sounds like it is coming from behind the manifold. A/C not on. No irratic idle before the engine dies. Before the engine dying problem, there was a power loss at 3000 rpm while driving down the road, but power would return without incident. This happened about 7 or 8 times prior to the current problem. Could it be the throttle position sensor? or MAP sensor? or computer? HELP!!!

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How to change cam shaft sensor on a 2004 kia optima

Posted on Mar 26, 2011

Mine did this it was the crank shaft sensor

Posted on Jun 26, 2008

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This could the problem with the onboard computer please get it changed..............or checked.

Posted on Jun 17, 2008

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Check and see if you have spark when it won't start. If it don't check the ignition module, Coil Packs,Crank and Cam Sensors. See if that gets in the right direction and let me know if not get back we will see if there is some more things we can look at. Ok thanks Bear001

Posted on Jun 17, 2008

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