The problem is either the blower motor resistor or the blower speed selector switch.
this is probably a 4 or 5 hour job for a professional.i would not recommend doing it yourself.most of the dashboard and glove box must be removed to access heater core.
Sounds like either clogged or air bound
By 1991 only 4 Nerf blasters were out, the Blast-A-Ball, the Blast-A-Matic which was the improved version, the Hydro Bazooka and the Slingshot. I know the Hydro Bazooka wasn't very popular, so I am going to have to say the Blast-A-Ball and the Blast-A-Matic were the most popular.
Dark Justice - 1991 Blast from the Past 2-20 was released on: USA: 12 February 1993
Lincoln Prize was created in 1991.
I DON'T BELIEVE THERE IS A BLOCK HEATER.
no
either your heater control valve is bad or you heater control switch on your dash is broken pull the knob of and see if it is cracked.
Lincoln International Academy was created in 1991.
Ok. What about it? Made by Ford's Lincoln division.
Heater core is inside dash board by firewall.
Disconnect batt. Drain Raidiator coolant.Remove Dashboard. Unhook both heater hoses located on firewall in engine compartment. remove airbox nuts in engine compartment. remove retaining screw for core in cabin. remove core.