ANSWERS: 5
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i would be more worried about the filter...
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I already replaced the fuel filter, but the van still runs as if it is misfiring. My plugs look good, and wires are all intact. I replaced the oxygen sensor also. Could there be a different sensor malfuctioning somewhere in the spark or fuel injection controols?
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You might want to check the Mass Air Flow Sensor. This might be what you are referring to as the Oxygen Sensor though.
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sand in your fuel tank will damage the rotars on an in tank pump and might damage the diaphram on a mechanical but only if it gets past the in tank or engine bay fuel filter
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Under ideal conditions sand would not cause any problems. Sand in your gas tank is not an ideal condition. Get it out of there!!!!
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