Ford - Mountaineer :: 2003 - Very Little Heat In Cabin But Not Blend Door?
Jan 27, 2013
My 2003 mountaineer 4.6L has front and rear heat. The issue is the heat in the front is barely warm and the heat in the back is poor. I have replaced the blend doors front and back and I'm sure they work as I can go from cold to barely warm and back again when I change the temperature setting.
I can feel hot fluid going from the engine to the front heater core and also down under the vehicle to the rear when the vehicle is warm. The return on the front is almost cold - so heat is being given up by the heater core in front, but it seems to me that if the return is almost cold, there's not enough hot coolant delivery. The overall heat is very poor in the cabin.
The coolant temperature gauge is steady and just below 1/2 with no erratic movements. I flushed the front heater core a couple years ago. Coolant has also been flushed last year. I know that the heat is underpowered in this vehicle, but it's a far cry from when it was new.
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My wifes 2004 Santa Fe has no heat. From what I have read, a common cause of this is the blend door. I pulled the glove box, but was unable to locate the blend door. On the parts diagram it appears to be on the bottom of the heater box. Every tutorial I have seen show it on the right side, and easily accessible.
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I have a SAAB 2000 95, and the heat isn't working. I was told by a local shop that the blend door motor isn't opening to allow the system to switch from air to heat. He said that the heating system was working, but that the hot air can't exit the dash. He said it would have to be repaired at a dealership.
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Whenever my A/C is turned on, it blows nice cold air. As long as the blower is on "1", "2", and sometimes ", it blows cold air. If I turn it to "4" I can hear a small "thud" behind the dash. It sounds like the blend door is shutting. All my functions work like they should. I think the actuator is goin out and isn't pushing the door all the way closed, and when I turn it to "4" it pushes it te other way.
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Over the last few days I have read several threads about heaters not working and blend door replacement. My '02 4.6 F-150 has 250k+ miles and I've always done regular maintenance on it. With the cold front moving in I've noticed that the heater is not blowing hot air. I flushed the radiator and flushed the heater core several times to make sure the core was not clogged. I also replaced the upper radiator hose because of the "crunchy" sound when squeezed. I also replaced the thermostat. Still, the heater is not blowing hot. I assume like many others that the blend door needs to be replaced. My question is do I need to replace the door only or the door and the motor (actuator)? I guess I need to test the motor before buying a new one. I saw a video where you remove all the components on the transmission hump and can actually stick you finger in the motor opening to see if the shaft has come apart.
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My ex-has the electronic temp control. I've noticed there is very little difference from full hot to turned down less than 1/2 way.
(I'll convert to Fahrenheit here) Example - lowest temp setting is 60. If I am on heat, turning it from 60 to 66, gives me almost full hot. A slight difference is felt turning it to 68 and 70, but basically, 70 is full HOT. Continuing to turn it up to 88 makes zero difference.
I figured the blend door actuator might be toast, but it is in fact moving. I pulled the heater core cover off and here is what I noticed.
At 60, the blend door is fully open (correct, pulling cold air from outside) turning it to 66 the blend door almost fully closes. then the last little bit gets closed when going from 66-70. Anything hotter than 70 is of no use because mechanically it IS on full hot at 70. So basically I get full cold, or full hot, nothing in the middle. I pulled blend door actuator out, cleaned all the built-up crud around the shaft, took it apart and cleaned it, (no broken gears) no effect.
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Recently found with the cold snap on the east coast that my vehicle wasn't getting heat to the passenger compartment. I changed my thermostat and added a gallon of 50/50 antifreeze to the radiator coolant container. What the next step I should try?
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Where the cabin air intake location is? I'm not talking about the air filter.
My 97 F150 has some sort of exhaust leak and it's coming into the cabin when the heat is on. I want to tape up the cabin air intake port but I don't know where it is. On later models, it's on the right passenger side near the cowl of the hood. Where is it on the 97?
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What is the difference between :
Part # XF2H-19E616-FA and
Part # YL5Z-19E616-AA?
The middle numbers are the same. And they look the same? the first one is mine. Blend door actuator out of a 2000 ford windstar. Will another part # work? If the connection is the same?
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Went into town earlier and the a/c was not blowing out the 2 passenger side vents. Could switch to defrost and it would blow correctly. The rear is working as well. The drivers side vents blow good and if you cover those with your hands to block them off its like it forces air to blow out the passenger vents. Could this be a blend door issue?
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I have a 99 EB Expedition 5.4 with EATC climate control. I replaced the heater core that had been leaking severely. When I got the dash back on I adjusted the controls with the engine running while watching the blend door actuator under the dash. it moved but not as much as I thought it should. So I drilled an "inspection" hole behind the glove box and into the plenum cover. I watched the blend door open and close when the hot/cold buttons were adjusted, but the movement was intermittent.
I'd checked the blend door for cracks prior to installing the heater core and found none. I left things alone for a day while I drove as normal. When I had time to work on it again, the actuator quit working. I figured it was damaged from the coolant leaking into the cab so I decided to replace it. It was indeed full of coolant. I bought a Dorman actuator (part #604-216) and plugged it into the wiring harness to test it before installing it. I adjusted the controls with the ignition in the "run" position and nothing happened. I'm at a loss as to what could be the problem. I've searched for this problem, but the only threads I find are incomplete or deal with the "manual" controls. I checked all my fuses and they are all good.
My questions are:
Could I have bought the wrong actuator? Would the harness fit the "manual" actuator? The part number was identified as being for the main blend door for "automatic" controls. Is there a possibility the EATC head unit is bad? It still sends air to the panel, floor and defrost when adjusted.
How do I test the voltage at the connector? I just bought a multimeter but I'm not sure which wires in the harness deliver power to the actuator. I know there are a lot of people on this site who've gone through the heater core/blend door ordeal and have lived to tell about it. What I should do next.
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Where is the Blend Door Actuator on the ford Aerostar?
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My 02 Mountaineer doesn't have any air flow volume out of the heat, defrost, or a/c vents. The temp will change from hot to cold and the air direction will also change from floor, dash, windshield, etc. The a/c recirculation door also seems to be working. The fan sounds as it is running very fast, just not putting out any volume. What should I look for?
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Time for me to replace the actuator. I just have one. I've watched many videos on it but none say anything about re-calibration before using. A few posts say this is needed. Is it? if so how is it done?
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I have an Explorer with automatic A/C. The blend door actuator broke (a gear inside) so I replace it with a Dorman part (could not find the Ford ones anywhere). Part #604-202, looks identical and fits. But... doesn't work.
If I do the EATC test (OFF+FLOOR, then AUTOMATIC), the display shows error coded 024, 025, 052. What is the meaning of those?
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Dad has a 97 F150 with some heater issues. He put a new potentiometer in and it didn't work. We he turns the dial to cold, it still blows hot air. Defrost =hot, vent=hot, a/c=warm etc.....
The dealership told him that the blend door might be stuck. My question is, how hard is this to fix? Is it something that I can just stop by after work and quickly fix. What is involved in fixing this and where it is?
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Compressor clutch engages, lines are cold, when it works air is cold. A/C guy thinks the blend door isn't working right, is it vacuum operated or electric?
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I purchased a 6.7 Diesel 2014 F250 Super Duty Crew Cab about 3 months ago. Yesterday I started my truck using the remote starter from inside my house. Seconds after I heard a loud noise. Looked outside, saw nothing and thought nothing of it till I went to open my door and realized that the driver door window shattered! I live in a quiet area, it wasn't a rock thrown at my truck or anything like that, it just Blew!!!!
I'm wondering if the truck might have some sort of pressure or torque if you wish on that window to make it just pop! My mirrors were folded in however I can't see that playing a role......
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My actuator/motor doesn't have the screws that hold it on. It's just clipped down. Can I just pry it up & off with out it breaking the clips that hold it down? It's a 97 Ranger.
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Having issues with the blend door on the AC system. I will have it on AC or MAX AC. I will have it on the setting to be point out of the dash at me. It occasionally will switch to the defrost windshield setting. I can hear the blend door moving and changing from chest level to the windshield.
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Question: blend doors clicking even when the key is removed from the ignition? Mine clicks for quite awhile after I turn off the truck (probably 10 mins or so, I haven't stuck around to see when it finally stops) Asking out of curiosity....and this thread may put some people at rest down the line.
I do love this truck and I don't mind working on it at all. The Blend doors allow me to paint the dash trim with Bright Aluminum Plastidip.
Leaky T coolant connector which I don't mind.....wanted to switch out to a 170 degree thermostat (SSI Tuned and South Texas Heat) and do a coolant flush anyways. Might as well hammer it all out. No biggs.
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