Check the diagnostic codes in the engine module, this will tell you exactly what to check. Once you have the code, perform a search here or on Google to find out what to check.
You'll need a scan tool that connects to the OBD port of the car, its not something you can do manually. Thats unfortunately the way cars are now, all computers.
If you have the trouble code from the scantool you can search on repairpal or the internet for the code to find out what the actual problem is.
RepairPal Certified shops can diagnose and repair your 1996 Chrysler Sebring. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.