The buzzer started going.  Looked at the wires and found the high pressure sensor’s wire unhooked.  Re-connected and the buzzer was still going.  Then I found one of the wires broken.  Went ahead and took both of those old, hard wires off from both sensors.  
It’s an ‘85 with a 2.1 engine.  So, I made new wires to the sensors, re-connected both of them nicely and the buzzer is still going.  I’m surprised because it was always good before.  It goes off over the 2000 rpm, that makes me think it must be the high pressure sensor’s fault.  OK, I will buy a new one and will change it as soon as I have time for it.  I hope, that will fix it.
Zoltan