1993 Plymouth Breeze

Check engine light simply means that the vehicle has detected a issue with the vehicle and has stored what is wrong in the pcm.

Autozone will scan it for free if money is tight. You can post the code here and I can help tell you what is the problem and help you get the vehicle restored to proper running condition.

The check engine could be simple like a engine missfire, or maybe complex like a torque convertor lockup solenoid issue or even with the braking system.

Hard to tell what it is untill you get it scanned