so I messed with the timer a lot and got it to run 10 on 18 off it ran all night in the morning the house was 73 degrees at the thermostat. so i waited for it to time out and shut down. Then ran the t stat up passed 73 did not come on strange because it was runninig with the t sat last week. T stat is digital and new. I think the moter is ok, but your right it is old.