Take out the screws that hold the AC/Heater housing together and separate it, and it's right there.
Heater core should be behind glove box. Remove glove box and screws( approx. 8) that holds cover in place. Pop hood and look for two hot water lines running into firewall at that location(passenger side) Remove lines by loosening hose clamps(advisable to replace) Remove heater core from inside and replace.
the inlet heater hose that connects to the top of the water pump connects to which outlet on the heater core? the far outboard or the inside? this is in a 2002 ford f250, 7.3.
drain coolant, disconect heater hose's, remove glove box, remove heater core cover, remove heater core. reverse order to reinstall.
.2 if u r fast 1,2 if u never done should be plenty of time
make sure your radiator is clean and no problems first, otherwise you will be throwing away $250 for the new heater core. Pontiacs are notorious "GM's" for having a plastic intake manifold gasket that leaks, which then mixes oil with the radiator fluid and produces this nifty orange rusty looking sludge, which then proceeds to clog your heater core -- so make sure the rest of your system works before trying to replace your heater core. www.autozone.com has free online car manuals that will help with the replacement location, hoses etc of the heater core
I belive it is the (I have a 99 4x4 v10 f250) I have had to replace TWO heater cores in 14 months . My neighbor is my mechanic and owns a shop. I only put 6000 miles on the first replacement heater core before it started leaking. So my mechanic made a call and you need to make sure you GROUND the new heater core you in stall it will stop Electrolisis builded up. The orignal core lasted 8 years. And you can replace the core by removing it thru the glove box. It cost me $240 to have everything done,when it started leaking again after 11 months I was only charged for the heat core itself about $100 bucks for a oem core. Begald you don`t have a f-150 they have to change the core from under the hood and it is about $700.00 dollars. Be gald you bought the f-250...
remove old heater and screw in new
Disconnect the negative battery cableDisconnect the temperature control and air door control cables from the heater housing.Carfully position the cables out of the wayDisconnect the electrical wires from the blower resistor and the blower motorRemove the retaining screws holding the air inlet vent duct to the main body of the heater housingDisconnect the wires from the heater blower on the engine side of the firewallDrain the water from the radiator and remove the heater hoses from the heater core on the engine side of the firewallRemove the heater body retaining nuts from the studs on the engine side of the firewallRemove the heater assembly from the passanger side of the firewallRemove the gasket situated between the heater hose end and the dash panel where the core inlet and outlet tubes pass throughRemove the heater core cover and gasketPull the heater core and lower support from the main heater assembly
Water pump not circulating coolant? Heater core partially restricted?
get a coolant system pressure test, there may be a leak in the heater core.
The resistor motor may have went out if the heater blower quit working on a 2004 F-250 Truck. The cost to replace the motor is approximately $200.
If this is the original heater core it may be stuck to the firewall and you will have to pry it off. Make sure that there are no other bolt holding it!!!