Thread: P0491 p0492 bank 1 bank 2 secondary air injection
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Old 04-29-2017, 07:17 PM   #4
78F350
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For the 03, ignore the fuel pressure regulator in this diagram. All the other components need to be connected to vacuum after the check valve. (D, E, F, J, K).
Best to replace all the tubing, otherwise, you'll be back.
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Last edited by 78F350; 04-29-2017 at 07:20 PM.
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