multiples of 12 are 12,24,36,48,60,72,84,96,108,120,132,144,156,168,and180
Replace the thermostat.
More then likely you need to replace the Thermostat.
either your thermostat is bad or the flame sensor on unit is no good. it also can be a limit switch. if it lights and stays on for awhile but doesnt reach temperature then its thermostat. if it lights for 10 seconds it is sensor or limit switch.
no indeed it doesnt have anything to do with it. you see the ac heater has diffrent conections in where the theremostat has nothing to do with if u were talking with temperature changes maybe it would.
could be a sticking thermostat.
It could be that your heater core is blocked or damaged somehow.
it doesnt
Ford doesnt have a 5.7l. On a 5.8 it is behind the thermostat housing at the front edge of the lower intake.
may be a bad thermostat
no it doesnt
Thermostat and/or heater core may be defective
no because it just doesnt ;I NEXT!!!!!!!!!