Re: reading codes without reader?
Unless your SES light is on or has been on, therewon't be any stored codes.
Also, our cars don't store misfire information. If you have a misfire, you can go on forever and the ECM won't have any clue.
First thing to do with a misfire is to check the integrity of the ignition system. When was the last time you did a tune-up?
License # EA150696
1988 Camaro RS
2.8L MPFI w/T5 trans.
Less HP than you would want to shake a stick at.
***RIP KED85 - You will be missed***