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Thread: Can You Completely Bypass the Air Pump
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Old 07-11-2021, 09:27 AM
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Secondary Air Injection system is not reliable. I had to replace Bank1 valve already because it failed open at 42,000 miles. It threw check engine and traction off lights and OBD2 scan confirmed permanent code. This system sucks and moisture its worst enemy but components are easy to replace on 5th gen 4R. As for bypassing it there are no posts here but kits are available online from random vendors. Some GX-460 members done the bypass but obviously it is different engine.
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