have codes 4.9l need help....

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Mar 29, 2005 | 10:13 PM

dogpile

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have codes 4.9l need help....

411..secondary air induction, incorrect flow detected.
1151...o2 sensor..lean

Mar 30, 2005 | 12:23 PM

IB Tim

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Mar 30, 2005 | 04:33 PM

bigredsbronco

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what year of vehicle is it

Mar 30, 2005 | 09:52 PM

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Quote:

Originally Posted by bigredsbronco

what year of vehicle is it

Its a 96... I have been told that the 411 code could be from the 02 sensors.
If this is true, is there a way to determine which of the three is causing this?
Any advice would be appreciated. The problem with the truck, is that it misses under a load, have replaced the fuel pump, coil, plugs, wires...