Secondary Air Pump running intermittently

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Old 12-25-2009, 12:37 PM
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Default Secondary Air Pump running intermittently

I changed the pre-cat O2 sensor which had started throwing the P0431 code. I have noticed since that the secondary air pump is not warming up the cat. Any ideas?
Old 12-25-2009, 07:31 PM
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SAI has been known to fail - probably need to replace it.
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