2003 Ford Expedition Local Dealership Changed Air Filter Mass Flow Sensor After

62,000 MILES
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The local dealership changed the air filter and mass air flow sensor after investigating the check engine light being on. They said the engine was running too bad to give back to me after this work, but the engine was running fine when I brought it in. Now they want to change the catlytic converter but are unsure if this correct the problem.
Is this the right fix?
Dec 10, 2012 at 4:33 PM
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ASEMASTER6371
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does not sound right. ask them why it is running worse than when you presented it. it sounds like they are guessing

roy
Dec 10, 2012 at 4:47 PM
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