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What is a secondary air injection malfunction?


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Answered 2006-12-22 15:14:33

The secondary air injection pump pumps air into the exhaust to help heat the catalytic converter at cold start. This lowers the emissions at an otherwise high emission time. A malfunction means that computer has registered either a pump failure (common on some models), fuse blown, or improper catalytic converter function. http://www.autoshop101.com/forms/h65.pdf has a diagram of this part, how it works etc.

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