Question about 2003 Kia Optima

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Engine shuts down even while driving

I replaced the fuel pump, but the engine stalled again-any ideas?

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  • acevedo1114 Oct 15, 2008

    I do not think it is the fuel pump becasue the engine did restart immediately after I pulled over and turn the key to start the engine.

    Could the ecm be at fault?

  • yadayada
    yadayada May 11, 2010

    Has it lost fuel pressure again? test it if you haven't and let me know.

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Run an OBD 2 test for trouble codes, the PCM or ECM as you call it is seldom the cause, less than 2% of time I was told in a factory school I attended on electronic engine control systems, Kragen and others will run this test for free, also You say I think the fuel pump isn't the problem, not good enough, check the fuel pressure, never just quess, know for sure, do the tests.

Posted on Oct 15, 2008

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