Need help in figuring whats wrong with my coleman electric furnance

gbhope

Hi
I have 2003 coleman electric furnance an EB20B model
I've replaced the sequencher, all the limit switches
My furnace will click click click when your over the vent the heat will get colder will click click click the heat over the vent will get hotter. I know its running up our power bill . Also when it clicks i have a box fan i run at night in my room , will when it click click click i can tell my fan will sound like it losses power too. Then it will click click click and the speed of my fan in the other room will pick back up. I don't understand how the furnace will cause my fan to go down too. I don't know if i need to replace relay, thermostat, or the heating elements or is it something else
thanks
any good info would be appreciated.

beenthere

Sounds more like a wiring/panel box problem, then a furnace problem.