I need to replace my heater core in a 1997 ford f150 extended cab

What have you checked so far ?
Fuse - resistor - power at the blower motor ?

Have any of you stopped to think that the Thermostadt may B bad especially after flushing the radiator replacing the heator cor Duh!!!!
Rplace the Thermostadt it will more then likley do the trick.
When the thermostadt goes out you will experiamce hot radiators no heat . ect.... first thing 95% of the people that experiance this replace the heator core first . no that you have elemanated the least obvious do the most

Car = Ford F150 1997Max Towing Capacity (lbs) = 6300lbs

Several VIN engine there...

1997 Ford F 150 Pickup 4.6 liter CNG SOHC V-8 VIN "9"
and
1997 Ford F 150 Pickup 4.6 liter V-8 VIN "6"
and
1997 Ford F 150 2WD Pickup 4.6 liter SOHC V-8 VIN "W"




Hope this help to solve it. (remember comment and rated this).

if it is just the rubber hose going in, the rubber hose can be replaced. if the aluminum tube coming out of the firewall is leaking, it it part of the heater core, and the whole core will need to be replaced. good luck!

1997 Ford F 150 4WD Pickup 4.6 liter CNG SOHC V-8 VIN "9"





1997 Ford F 150 4WD Pickup 4.2 liter V-6 VIN "2"






1997 Ford F 150 4WD Pickup 5.4 liter SOHC V-8 VIN "L"




Hope this help (remember rated and comment this).

this is not a job for the faint of heart!! you have to remove the complete dash! the heater box is located hehind the radio !in the middle of the dash ! theres no way around!!!

1996 Ford F 150 2WD Pickup
4.9 liter L6


1996 Ford F 150 2WD Pickup
5.0 liter V-8

1996 Ford F 150 2WD Pickup
5.8 liter V-8

The inlet/outlet pipes (tubing) is an integral part of the heater core. If the actual core is leaking, you 'll need to remove and replace or repair the heater core. Be sure it's not the hose that is failing ... alot easier and cheaper to change out a hose and clamps...