Fuses blow when there is a short circuit or an over current condition.
heater will not blow on a 1996 ford contour
if the heater does not blow out warm air change the setting.
No, not if it's on a heat setting. Most home thermostats have a "Fan" setting that will blow cold air if the attic is cold.
You may have a faulty switch that controls the speeds on the a/c blower fan.
NO.
Some ford truck hvac systems will default to the defrost setting if the is a problem with the electrical or vaccum parts of the system. I encountered a ford truck that had a mouse living under the hood and chewed through the vacuum hoses and would only blow on defrost.Do a good visual check including electrical,such as fuses etc...
There is no 1995 ford Expedition!
why my horn stop blowing
because it can
It's called "blow-by", a condition caused by combustion gasses leaking past the piston rings. It's an indication that the engine has not been adequately maintained. That means that you are in need of a new set of piston rings.
It depends on the precise type of slow blow fuse, but in general terms a fuse with a slow blow characteristic will take longer to operate (blow) at high overload currents than one with a normal characteristic. For low overload currents it will operate in about the same time as a normal fuse.