Need Help,,,
Autozone diagnosed "Service engine soon" light is caused by secondary air pump.
So, I have it replaced and the light was turned off. Pump valve and hose were not replaced.
But, the light came back. I still can hear loud noise coming from the pump for a minute on a cold start in the morning, which is a sign of failed pump I learned this website.
Why do you think it is not OK? What should I check? It seems but I doubt that the new pump does not work.
Thanks a lot.
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