Diagnosis ? Lean Burn Computer Dying or another problem?

My 1985 Chrysler Fifth Ave. recently has been my wife's transportation to work. It developed a slow coolant leak that I have been nursing along, the leak seems to be on the right rear of the motor, but not from the lower freeze plugs. It still has the Lean Burn computer that had leveled out and was working good. Yesterday, my wife started on her trip to work and the motor started running rough so, she headed back to the house and it died before our driveway. I got it started later and it seemed to be very flooded. This morning she again started to work and it died again!
I wonder if the lean burn computer completely died or is there a cracked head gasket? I haven't noticed any water or coolant in the oil before, but I guess I need to check again!
Any advice, thoughts or opinions would be appreciated!

Thanks,
Bruce