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It may be a leak in the tube that connects the MAF to the throttle body. If the check engine light is not illuminated, it will make the job of finding the problem a lot more difficult. it could have a pluged fuel filter or a pluged air filter or a pluged catilitic converter. Maybe a bad fuel pump

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โˆ™ 2004-12-01 11:22:43
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Q: Why would a 2000 Ford F150 4.6 liter lag when accelerating and vibrate?
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