so i have a 1999 trans am 6 sp. my check engine light comes on when i beat on it. it goes off later though. i have a k&n airfilter no lid magnaflow exhaust and a ram air hood. I have no idea why it goes on and off i was hoping someone would know.

 

Get a scanner and check to see what code are being stored.

 

uhhh thats good...

 

whats that supposed to mean

 

It's impossible to guess what code is being set. If you don't have access to a scanner I think AAMCO and/or AutoZone can scan your car for free.