0
just changed heater core for 91 Nissan Maxima. I cheated and everything turned out great. first remove refrigerant from cooling system or diconnect unit at firewall and blow hole in ozone layer. disconnect hoses to heater core at fire wall.next remove lower dash and glove box.disconnect cooling unit by unscrewing two top screws ,two side screws and screw at bottom, unscrew vent flap on left. pull down and out on cooling unit.take channel locks and break off plastic pipes running through firewall twist and pull out. slide out heater core. remove plastic tubbing from new heater core and slide new unit in bracket . reincert tubes through holes by twisting and sliding them back in.rescrew back to heater core. this is tricky part because you have to feel top right screw with finger impossible to see. i used Phillips tip with extension and ratchet. place extension on screw then place ratchet on end.replace cooling unit , glove box, dash, vent flap,hoses and tubes to cooling unit. may sound crazy but saved me from removing entire dash and rear vent tubes as well as heater core housing. i now have great heat and freezing air.make sure to use old towel to catch remaining coolant in old core when you pull it out. add refrigerant oh happy day
What else can I help you with?
Where is the heater core located on a 91 Nissan maxima?
the heater core is behind the dash board
How do you replace a heater core on a 93 olds 98?
how do you replace a heater core in a 91 Oldsmobile 98
How do you replace heater core in a 91 Chevy truck?
replace heater core in a 1991 Chevy work truck 1500
How do you replace a heater core in a 91 Lincoln Town Car?
heater coil on a linclon town car 2002
How do you replace heater core in 91 Cadillac brougham?
To replace the heater core in a 1991 Cadillac Brougham, start by disconnecting the battery and draining the coolant. Remove the dashboard and the center console to access the heater core's housing. Disconnect the hoses from the heater core and unbolt it from the housing. Install the new heater core, reassemble the dashboard, reconnect the hoses, and refill the coolant before starting the vehicle.
Where can you find and how do you replace the heater pipes not hoses on a 91 Caprice Wagon 305 the ones that go between the heater valve and the heater core?
The heater hoses connect the block, radiator, heater core, and waterpump. To replace, drain the radiator and catch the anti-freeze for recycling. Remove the hoses and put on new hoses. It is kind of nasty but not very difficult.
How do you bypass the heater core on a 91 Mazda Protege?
Remove both heater hoses from inlet & outlet of heater core. Connect these hoses together.
Will a Bad heater core in my 91 ford tempo cause the overflow and radiator to empty?
Only if the coolant is leaking from the heater core, but you will see this.
How do you replace heater core 91 Geo Tracker?
To replace the heater core in a 1991 Geo Tracker, start by disconnecting the battery and draining the coolant from the radiator. Remove the dashboard and any necessary components to access the heater core, including the glove box and center console. Disconnect the coolant hoses and screws securing the heater core in place, then remove the old unit and install the new one. Reassemble everything in reverse order, refill the cooling system, and check for leaks.
What are the heating issues with 91 Cadillac sedan deville. No heat through the climate control. What could be the issues?
e.g. heater core clogged is a common one - flush or replace it
How do you change a heater core for a 91 escort lx?
The dash must be completely removed in order to gain access to the heater box. Then the heater hoses are disconnected and the heater box is removed and opened up. That gains access to the heater core for relacement.
Why would a 91 Honda Accord EX have AC but no heat?
Is there plenty of coolant in the radiator? Did someone remove the thermostat, and not replace it? If both of the above are alright, then it sounds like a door in the ventilation ductwork is not opening to allow heat to come in from the heater core. Maybe someone by-passed the heater core.
