secondary air is an emmisions related feature not an hvac component

 

how do I know if I have the secondary air component? I think the car fax report I got when we bought it said it started out on California....do they all have the secondary air component..or just some? Do we still think there is no problem?

 

secondary air has tubes that connect to the heads and a pump is also mounted on the pass side firewall,when the car is cold the pump will run for about a minute then shut off

 

So what would cause it to come on after I brake? is it common to hear it when its on?

 

if the secondary air is on you'll hear it sounds like a vacum cleaner or shop vac,its pretty loud...give us some more details about your problem

 

I am not sure there is a problem,,,I just started hearing this small compressor like sound from under the passenger side dash and got worried that something was wrong....it only comes on after I brake and come to a stop...

 

It has just stopped...haven't heard it in a few days? If it is that secondary air thing....why would it just stop after hearing it for a week or so?