Well, I replaced the secondary air injection pump this past weekend (because the previous one burned out) but I'm not too sure that the system is working correctly. The pump is a lot noisier than I remember it being before and I can feel noticeable airflow when I put my hand next to it. Unfortunately, I never messed with the old one before it died, so I don't know if this is correct behavior or not. What is the relationship between the air pump and the vacuum system? Where does the big hose go from the air pump? I was hoping that the pump was the cause of a vacuum leak that was causing my engine idle to surge, but unfortunately the surge is still there and I can't find any vacuum leaks. Could this be an exhaust problem? -- agreenbu Return to Main Index
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