My fan on home central air runs all the time even when thermostat is in off and auto, what could be wrong?

Cooling fan relay could be stuck, or t-stat is going bad. It si just the blower inside that is running?

Yes it's the fan in the house.

OK turn the t-stat off and go down to the furnace and turn the power off and back on and see if the fan comes on as soon as you do.

Yes it does and I tapped on the reley and now the fan turns on and off with thermostat

Sometimes they just stick, may run fine for you for a day or 3 or 4 more yrs. Glad you got it going

Thanks for all your help

No problem.