04 Explorer No Heat!!!
Thread Starter
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Junior User
Joined: Jan 2005
Posts: 96
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From: Elkridge, MD
04 Explorer No Heat!!!
I have a 2004 Ford Explorer EB with little to no heat. I keep reading about this blend door actuator with the stripped gear (even though I don't have a clicking noise from under the dash). I started looking into it this past weekend and I don't have the actuator in my car. My Explorer has the electronic dual climate controls with rear heat/AC. I eliminated the control valve by using a straight piece of heater hose. Both lines going in and out of the firewall feels hot to the touch. Any suggestions?
Fleet Mechanic
Joined: Aug 2002
Posts: 1,899
Likes: 29
From: Raleigh USA
You have a blend door actuator, they all do. Can you get heat from the right side? You actually have 2 actuators and 2 blend doors. You could have a bad EATC module. Perform a module self test by turning the key to on, press OFF and FLOOR at the same time, the press AUTO within 2 seconds. The module sill do a self test and if there are any codes it will display them.
Thread Starter
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Junior User
Joined: Jan 2005
Posts: 96
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From: Elkridge, MD
Tested for flow through the heater core and it is GOOD. Tried a module self test and nothing happens... Turned the key to ON - Pressed OFF and FLOOR at the same time and within 2 second pressed AUTO... Nothing appeared to happen. I also want to noted that the very small amount of warmth that I do feel, it's mostly from the left vent. Right vent has zero heat.
On another note: I repeatedly flushed the cooling system in Sept. 14 until the water was crystal clear, drained and added the correct amount of antifreeze. Within one year the coolant turned a light pinkish color (was lime green colored when replaced). What would cause this, rust?
On another note: I repeatedly flushed the cooling system in Sept. 14 until the water was crystal clear, drained and added the correct amount of antifreeze. Within one year the coolant turned a light pinkish color (was lime green colored when replaced). What would cause this, rust?
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Hotshot
Joined: Jul 2005
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all of the air goes thru the air conditioner coil, then the blend door sends a given portion thru the heater core and the cool and warm air are "mixed" after that to get the temp you desire. Check if your air conditioner compressor is running ...... if so, you could disconnect the elect plug to shut it off and see if things warm up. ....... by switching from HOT - to COLD, you should be able to get a "broken" blend door to move somewhat and prove what is going on.
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Hotshot
Joined: Jul 2005
Posts: 11,931
Likes: 180
drawing at the bottom of this page will give you an idea of the air flow / blend door setup ........ not your system, but a good idea of how things work.
https://www.ford-trucks.com/forums/9...-please-2.html
https://www.ford-trucks.com/forums/9...-please-2.html
Hotshot
Joined: Jul 2005
Posts: 11,931
Likes: 180
I have not worked on the 2004 Explorer, but I think you can take out the glove box and look thru it to the controller behind the dash...... On the F150, you can lay on the drivers side floor and look up under the radio and see the motor drive... Remember all of the doors work off vacuum, EXCEPT the temp control door which is motor operated so it can be adjusted, not just open- close.
Also , if you have the EB climate control system, it may be slightly different as longbed said.
Also , if you have the EB climate control system, it may be slightly different as longbed said.
Hotshot
Joined: Jul 2005
Posts: 11,931
Likes: 180
here is a post I saved from several years ago ... thought I might need it on my 2002 someday.--------------
------------2003 blend door post on nov 21, 2009----
Well after being quoted $679 and $650 from two different dealers...I decided to tackle the blend door actuator myself. I started at 10:30 this morning and was buttoned back up and on the road by 12:30. That top back screw is a royal PITA to get to. All in all I think anyone with minor skills could tackle this job as long as they have patience and perseverance to complete. You will get frustrated with trying to get that top back screw out...so I suggest stepping back and taking a deep breath because laying on your back beneath the steering column is really uncomfortable.
Here are the steps I used:
1. Remove center consold
2. Removed trim piece below steering column
3. Removed dash tower support
4. Removed left side floor duct
5. Removed dash control panel and unplugged wire harnesses
6. Removed 3 screws holding actuator in place
7. Unplugged wiring harness from actuator
8. Plugged new actuator in to harness and tested operation
9. Reversed the order for installation
------------2003 blend door post on nov 21, 2009----
Well after being quoted $679 and $650 from two different dealers...I decided to tackle the blend door actuator myself. I started at 10:30 this morning and was buttoned back up and on the road by 12:30. That top back screw is a royal PITA to get to. All in all I think anyone with minor skills could tackle this job as long as they have patience and perseverance to complete. You will get frustrated with trying to get that top back screw out...so I suggest stepping back and taking a deep breath because laying on your back beneath the steering column is really uncomfortable.
Here are the steps I used:
1. Remove center consold
2. Removed trim piece below steering column
3. Removed dash tower support
4. Removed left side floor duct
5. Removed dash control panel and unplugged wire harnesses
6. Removed 3 screws holding actuator in place
7. Unplugged wiring harness from actuator
8. Plugged new actuator in to harness and tested operation
9. Reversed the order for installation
