Question about Ford F-250

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I replaced heater core on my 1995 ford pickup f250 truck a hoses look fine but i do not get any heat in the cab

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How do I change the heater core on my 1992 ford ranger
it had a short and cot on fire, put out and drove off, need to replace

Posted on Dec 10, 2009

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Make sure you don't have a air pocket in the heater core.a thermostat stuck open or broken can cause the engine to run too cold.

Posted on Oct 07, 2009

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1 Answer

1994 F-250 Heater Core


Answer for a 1995 F250:

Remove the glove-box door. Behind that is the heater core cover on the interior, passenger side of the firewall. Remove that cover and there is the heater core. Open the hood and look where the heater hoses enter the front right passenger area of the exterior side of the firewall. Disconnect the two heater hose clamps and you can then remove the heater core.

Jan 13, 2012 | 1994 Ford F250 Supercab

1 Answer

No heat blows into cab, just cold air, told it can be the actuator for ac/heat blend door, but then I read that it could be the door itself.


yes both are true. but most likely the actuator quit working, Youll have to find it and watch the operation and make sure it has voltage telling it to open. Some times they will click and start to move but slip and not open. I worked on one that was behind the radio.

However first I would go out under the hood and feel both heater hoses that go into the firewall. Both should be hot. If one is hot and one not and when the heat is turned on it blows hot for a minute but turns cold then the heater core is plugged and all you have to do is disconnect both hoses and attach a hose to one and back flush water until it runs clear. about 5 minutes each direction.

Fords are famous for having plugged heater cores. And still famous but a little less so for bad actuators.

Feb 15, 2011 | 1995 Ford F250

1 Answer

Have a 96 f250 deisel and the heater is aonl putting out warm air. Replaced the thermostat, both heater hoses are fairly hot. I think it may the the air mixture door. How do i check this.


Seems to be that your heater core has some restrictions in it. If your heater is not getting hot. You may need to replace the heater core. The mixture door can be checked by the sound it makes when you turn the controller from cold to hot . you will hear a clump sound.Good Luck!!!

Nov 14, 2010 | 1996 Ford F250 Crew Cab

1 Answer

Where are the heater hoses located? I have a 2003 f250 with a 5.4 V8


they are the small hoses (5/8" and 3/4") that connect to the heater core nipples on the firewall under the hood at the rear of the engine

Jul 10, 2010 | 2003 Ford F250 Super Duty Crew Cab

2 Answers

2001 F250 super duty 5.4 has very little heat. changed thermostat, checked blend door and other diverter doors. all are working. blew the dust from the heater core. still the air is luke warm. anyone have...


You should have a heater control valve in one of the heater hoses. Check that when you set the controls all the way up hot that the valve is opening the whole way to allow hot coolant to run thru the heater core. If the valve is working and allows flow, you may have to take it out to check it. Then the problem will be the heater core is most likely clogged and needs cleaned out or replaced.

Dec 29, 2009 | 2000 Ford F250 Super Duty Crew Cabs

1 Answer

No heat is there a fuse 2003 f250 is there a fuse for heater


i don't know realy if there is a fuse (though i doubt it) but issues with heatting may be this will help.

If the carpet under the heater core is damp, or if antifreeze vapor or steam is coming through the vents, the heater core is leaking.
Remove it and install a new unit (most radiator shops will not repair a leaking heater core.
If the air coming out of the heater vents isn't hot, the problem could stem from any of the following causes:
  • The thermostat is stuck open, previnting the engine coolant from warming enough to carry heat to the heater core. Replace the thermostat.
  • There is a blockage in the system, Preventing the flow of coolant through heater core. Feel both heater hoses the firewall. They should be hot.if one of them is cold, there is an obstruction in one of the hoses or in the heater core,or the heater control valve is shut. Detach the hoses and back flush the heater core with a water hose. If the heater core is clear but circulation is impeded, remove the two hoses and flush them out with a water hose.
  • If flushing fails to remove the blockage from the heater core, the coremust replaced.

Nov 27, 2009 | 2003 Ford F250 Super Duty Crew Cab

1 Answer

Heater not working (no heat)


If u have issues with heatting may be this will help.

1- If the carpet under the heater core is damp, or if antifreeze vapor or steam is coming through the vents, the heater core is leaking.Remove it and install a new unit (most radiator shops will not repair a leaking heater core.

1 - If the air coming out of the heater vents isn't hot, the problem could stem from any of the following causes:
  • The thermostat is stuck open, previnting the engine coolant from warming enough to carry heat to the heater core. Replace the thermostat.
  • There is a blockage in the system, Preventing the flow of coolant through heater core. Feel both heater hoses the firewall. They should be hot.if one of them is cold, there is an obstruction in one of the hoses or in the heater core,or the heater control valve is shut. Detach the hoses and back flush the heater core with a water hose. If the heater core is clear but circulation is impeded, remove the two hoses and flush them out with a water hose.
  • If flushing fails to remove the blockage from the heater core, the coremust replaced.

Nov 19, 2009 | 2003 Ford F250 Super Duty Crew Cab

1 Answer

How do you bypass the heater core on a 2000 Ford F250 V8 Triton motor?


Disconnect heater hoses from heater tube on motor and clamp a hose from on tube to the other.

Nov 02, 2009 | 2000 Ford F250 Super Duty Crew Cabs

1 Answer

2000 F250 super duty v10 engine. no heat. coolant changed. fuses, thermostat are ok. temp gauge operates normally. both heater core hoses are warm but still no heat in cab.


check the vaccum hoses on the passenger side under hood. I think that there are two hoses but it might be three. they get brittle and leak. but they move a little valve that you can move yourself just to see if heat works then. it is inline with the heater hoses I think. Bear with me though because it has been about 3-4 years ago when I figured this one out. it is definately a vaccum problem. there is also a set of vaccum hoses under passenger side of dash, several colors in it. might want to look there because sometimes kicked by peoples feet but money is on the ones inline with heater core. just move linkage and see if it gets hot air. Hope I helped and didnt confuse.

Jan 12, 2009 | 2000 Ford F250 Super Duty Crew Cabs

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