Honda Repair: 92 Honda accord, vacuum leak, maintenance checks

Question
I have just acquired a 92 honda accord and have noticed that the sensor light for the passenger door is staying on like the door is open.   What do I do about this.  Also maintainace needed light is on.  Runs well exept it idles really rough when cold.  Any help?

Answer
Charlene:
Either the sensor is bad or the connection is bad, most likely it is a bad connection at ground. The maintenance light should come on every 6K miles for routine maintenance checks. The rough idle could be caused from bad plugs, plug wires or a vacuum leak.
Bill