Question about 1997 Ford Explorer AWD

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1997 ford explorer... My heater is only blowing cold air. The heater core and tubes get warm to hot, the temp control knob works. Is there any time of short term quick fix i can do till i have the money to fix it in two months so me and my kids dont freeze? can you tell me step by step please

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Http://youtu.be/bpsul3ynEyA
This is a jury rig way to get your help to work if you don't have the money to replace the actuator or door repair

Posted on Jan 04, 2015

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If the thermostat is not opening (coolant circulating) and getting coolant through the inlet hose of the heater core you will not get any heat. If the thermostat is working then the heater core is clogged. Some folks take the heater inlet and outlet hose off and flush each end with a garden hose, got to give it enough pressure to unclog the core.

Posted on Nov 21, 2013

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SOURCE: heater on ford 2003 ford pick up blows cold air

on the evap box there is a control mtr that switches the hot cold door. these mtrs are prone to failure. the other problem that i have seen is that the door breakes in side the evap box and that means removing the box to replace the door . if i remeber correctly you may have to slide the dash back to gain assces to the control mtr to test it good luck

Posted on Dec 22, 2008

harley9701ha
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SOURCE: Temperature Control not working on 1999 Ford Explorer

Sounds like your temperature actuator is not moving or your temp door is broken. On max a-c ,coolant is shut off to your heater core allowing only cold air in.

Posted on Jan 26, 2009

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1 Answer

Heater blowing cold air


There are only 2 reasons for a problem like yours. Either the water is not going through the heater core or the ductwork under the dash has a problem. For checking the water flow, warm the truck up and then feel both water hoses connected to the heater core. They should both be hot if the water is flowing. If they are both as warm, then the problem is inside the cabin under the dash. If they are not equally warm, there is a problem with water flow.

Tip- For a time the manual heat control models(Not electronic) used a heater knob which could break on the backside of the knob. When it does this, the heater control shaft will not turn as the knob is just spinning in place. Gently pry the knob off and then twist the control shaft to see if it will now work.

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There is a separate heater core, like a small radiator, which needs hot water running through it, so when the air blows over it, the air gets hot. It sounds like the diverter valve which sends the hot water to this heater core is not working. It could be a problem with the valve itself, or the relay or switch that controls it, or the vacuum line or device that opens the valve when the switch or relay tells it to open.

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The A/C pump starts when i move heater controls to defrost or mix


Great question dustin but the A/C is suppose to come on in defrost or mix mode- this is floor & defrost. Does not seem to make sense does it. One of the things the a/c does is remove the moisture from the air. You need warm DRY air to remove the moisture from the windows. An automotive H.V.A.C. ( Heating,Ventilation,Air conditioning) first forces air thru the a/c evaporator core then thru the heater core and out the selected vent. If you only want a/c a blend door will by-pass the heater core which is controlled by a hot/cold knob or digital temp cotrol on the dash. Now back to the cold air problem- assuming the basics are all ok- Coolant is full, Engine gets up to proper operating temp-around 195 degrees- upper radiator should be hot. Both heater hoses should be hot. If thats all OK the blend door might not be working. It is controlled by an electric motor called a Blend Door Actuator which are prone to fail. I have replaced many on ford vehicles. Hope this helps

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My 2002 ford explorer the temp. Control knob when you change it it makes a loud clicking sound and it will no longer blow cold air only hot.


there is an actuator that controlls a blend door that is called a blend door actuator. This "door" is inside the evaporator case and it opens and closes to divert air over either the evaporator (for air conditioning) or the heater core (for heat) and can be somewhere in between for warm air. your temp knob sends an electric signal to this actuator to controll that door. the actuator has plastic gears inside of it that can become stripped of its teeth causing a "tapping" sound. These trucks comonly have this problem. The actuator is screwed on to the evaporator case and the blend door actuator is a mounted on top either behind the radio or the glove box. It;s about the size of a deck of cards

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1 Answer

Just purchases a 1997 Ford Explorer AWD V8 and the heater isn't working. Put anti-freeze in it last night and it started to get warm. No such luck this morning, it's blowing cold air. The outside...


OK, recheck the anti-freeze level and fill if necessary. There may be a leak in the system.
If it is filled up to capacity (also check that the upper radiator hose is full of fluid by squeezing), then the next thing to check is the two heater hoses that enter the firewall for the heater core. If they aren't getting hot at normal operating temperature, the heater core is plugged up and will have to be flushed or replaced.

If the heater core hoses are hot, then a blend door problem exists for shuttling hot air from the heater core to the interior of the vehicle.

Good luck on this repair.

Jan 19, 2011 | 1997 Ford Explorer AWD

2 Answers

1986 ltd country squire heater blows fine but only mildly warm air comes out. there is a control sensor just below the inlet hose to the heater core. is this what controls water flow to the core and does...


that could be the water valve that is controlled by the hot/cold knob on teh heater control, Have someone turn the knob to cold and then hot and see if you can see the valve turn.

Feel the inlet and outlet heater core hoses. They should be about the same temp when the engine is warmed up.

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2007 corolla does not give off heat, blows cold. temp shows correct range, heater core hoses hot to the touch inside and out, radiator hoses hot and fluid is sufficient.Would thermostat be at fault even if...


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1 Answer

Heater will not blow hot air. it blows cold air and fan blows. new thermostat and full radiator


The heater core is possibly blocked or the temperature adjuster is not working.

First check the controls to be certain that the temperature aduster is working and the flaps/doors that direct the flow of hot air are working.

If they are..........

Check heater hose temp. If one is hot and one is cold, you are not getting flow through the heater core.

Bleed it to remove an air blockage.
If that does not work, flush the system.
If that does not work, replace the heater core.

Karl at topgunwon.com

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1 Answer

NO HEAT AT ALL FROM THE VEHICLE ONLY COLD AIR


if the heater hoses going in and out of the heater core are hot, then your temp blend door is not moving to allow heat from the heater core into the car. either the temp knob or blend door motor is bad. some are vacuum, some are electric.

Feb 22, 2009 | 1997 Ford Explorer AWD

1 Answer

Temperature Control not working on 1999 Ford Explorer


Sounds like your temperature actuator is not moving or your temp door is broken. On max a-c ,coolant is shut off to your heater core allowing only cold air in.

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