95 firebird Lt1, rough idle trouble shoot?
I have a firebird that just recently started idling rough when stopped and when accelerating. On start up prior to the recen rough idle the car will sometimes idle very low and shut off immediatly or within a few moments. But sometimes the car will start up right away with no problems just the rough idle now. and the car sometimes starts up at a slightly higher than normal idle. once the car picks up speed it accelerates alot smoother but you will notice the roughness when cruising around 50mph-60mph and you lightly press the gas. I was thinking the MAF sensor ? my dad is pretty ademit that its the O2 sensor? any ideas? and also the car is giving codes most of the time but becuase i have an OBDI computer with OBDII connection the shops i have taken it to have not been able to read the codes and autozone is by california state law supposebly not allowed to scan vehicles anymore?