Greetings all! I have a question to see if anyone else has had this happen to them. So when I start my car first thing in the morning (only happens after a long period of not driving) The secondary air injection pump runs for the first 1 min of the engine being on and it sounds loud enough for me to hear it over the radio. This just started 2 days ago, I am wondering if I need to change it because I have never heard it before. I will take a video tomorrow morning if anyone wants to hear the noise. If that pump fails it will just hurt the emissions and kick out a check engine code? Thanks for any help in advance.

 

I've had my roadster for 10 years now, it has ALWAYS made a loud whine upon a cold start - normal.
You can unplug it but you might/probably get codes that will prevent you passing inspection.

 

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Same here, it runs to help warm the car. Sometimes, after a long ride at highway speeds and slow to a stop, mine runs to inject more air into the cats (maybe to cool them down?). That pump turns on/off according to the sensors and the computer. IF it runs continuously or not at all, a stuck relay in the RCM has been reported a lot. There is also an issue of the pump not running at all due to its internal parts seizing up and breaking.


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