Would like some help on what I need to check when the check engine light come out. thank you

 

You need to have the computer scanned. You can usually have this done at your local parts store...autozone, etc.....

They'll have trouble with '95 cars..

Why not tell us about your car.....modifications, transmission, etc. this will help us help you.

 

As noted, what year is your car? 93's can be scanned with a paper clip. 94/95 need an OBD-I scanner or scanning software. 96/97 need an OBD-II scanner or software.

Attempting to diagnose the dozens of codes that can turn on the SES "Service Engine Soon" light is not really productive.