i have a 01 SS with slp long tubes, slp cats and loudmouth exhaust. i have rear o2 sims because i was throwing ses codes last year so i put on the sims to shut off the light to pass emmisions and it has worked thus far. my problem is the last couple months i just all of a sudden threw a ses PO410 but i can hear the AIR pump working? i can hear it turn off everytime after start up so i dont dont what to look for? i checked the fuse and the relay and both are good so im lost on where to begin to look to turn off the light. i need the light off to pass emmisions this month. any help or info would greatly be appreciated!

 

i can hear my air pump working so i am confused on why it would be tripping a ses light? even though the pump is turning on could it still be bad? im confused. i really need to try to get this figured out so i can pass emissions at the end of this month any input would be greatly appreciated, thanks in advance guys!

 

You hear the pump running but is it pumping air?

http://www.gearchatter.com/viewtopic9141.php

 

not sure, whats the easiest way to tell?