I assume you want a simple answer here well there isn't one.But it is possible you cant go to AutoZone or some place and have them use a code reader because it doesn't work on a car made before 1996.Now it can be done the OBD-1 port is in the same place as the OBD-2 you are going to need a thin piece of wire a paper clip works pretty good and a flash light.Now you are going to look for your OBD-1 port under the dash under the steering wheel and look for 2 slots side by side the first is A and the 2nd Is B here is where it gets tricky your check engine light will flash it will flash one time first then 3 more for a combination of 13 it will do this about 3 times ignore those that is the computer checking for any stored codes,Now any codes that follow will be the cause of your check engine light.Write them down and Google them