Hey I had to put on a gasket on my exhaust manifold, when i took the cat off I accidentally broke two studs off so I had to run the car with a exhaust leak for a day untill I could get it sealed now the check engine light stays on, theres no leak. What can I do

 

you need to clear the code(s). it wont go off by itself. it will set a lean exh. code. as well as some others like O2 codes.
chris

 

Dont want to ask a dumb question but how do you reset the codes?

 

Not a dumb question at all, but heres your answer:
http://www.installuniversity.com/ins...am_air_mod.htm
somewhere in the beginning of that it tells you how to reset it. Enjoy