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P0411

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Old 02-23-2009, 03:03 PM
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Has anyone ever thrown a secondary air injection pump code it says I have a upward flow leak.... Could this be caused by not having those line attached to my intake tube. I get like two starts and it throws a code.
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Old 02-23-2009, 03:44 PM
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Which specific code?

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Old 02-23-2009, 03:50 PM
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lol my bad it P0411
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Old 02-23-2009, 05:54 PM
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P0411

90% chance crossed, disconnected vac lines or backwards check valve (1).



10% chance air pump has burned through itself (melted plastic impeller)

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Old 02-23-2009, 06:18 PM
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What is wrong with my S2000? Fuel pump maybe?




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