Last post on Dec 11, 2013 at 10:23 AM
You are in the Ford Explorer
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Ford Explorer, Heating / Cooling, SUV
#167 of 539 Re: 1998 Explorer has no heat/weird a/c situation [Mishasma]
Nov 22, 2008 (7:46 pm)
Ford changed the HVAC system in 02 so a lot of the previous comments do not apply to your model. The earlier Explorer has the blend door on a vertical axis which is also susceptible to the same sorts of failure as the later models. The difference is that when the axle connector breaks, the door is free to swing back and forth. Bumps in the road, hard turns, acceleration, fan speed, and general gremlins can cause the door to shift position randomly.
Check the heatertreater web site at heatertreater.net for diagnostic information and pictures of the most common fail modes. The actuator motor is located on top of the plenum box and can be accessed through the glove box opening. The motor is frustrating to remove, but you need to do this and examine the connection to the blend door.
This is a common problem and there are lots of suggestions and procedures to effect a repair. The HeaterTreater is not the cheapest, but is the easiest and is proven over hundreds of successfull installations. If you just want to fix it once and be done with it, we can help.
#168 of 539 Re: 2006 ford explorer/ no heat/ overheating [iamdugliest]
Nov 23, 2008 (10:06 pm)
I know this is probably dumb to ask, but have you checked the level of your radiator fluid. I have a 2003 Dodge Ram and the radiator developed a leak, and when the level of anti-freeze was low it would not blow hot air when stopped, and it would start to overheat. So check that.
#169 of 539 2004 Explorer: No HVAC air flow when accelerating under a load
Nov 24, 2008 (8:58 am)
When accelerating or climbing a hill, especially when pulling my boat, the air flow from the HVAC vents (either fresh air or AC) stops. But, once I let my foot off the gas, the air flow slowly returns. Seems like the air bleed door is electronically closing whenever there is a load on the engine because you can still hear the blower working but no air is flowing thru the vents.
#170 of 539 Re: 2004 Explorer: No HVAC air flow when accelerating under a load [LHW]
Nov 24, 2008 (9:33 am)
you have a vacuum leak somewhere, or there is a bad check valve.......
#171 of 539 Re: A/C + HEATER SEMI-BROKE 2002 Ford Explorer. [harkess]
Nov 28, 2008 (5:08 pm)
I may have the same no heat issue with my 02 Explorer. I've been off work following surgery so a dealer fix is out of the question.Can reply to: buckeyesrule04yahoo.com
#172 of 539 Heater not resetting
Dec 06, 2008 (10:53 am)
I have a 2002 explorer with the deatc system.Usually when you turn the truck on everything goes back to the previous settings but now when you start the truck its all shut off and it resets itself to 75 degrees.This is very annoying.Not sure what this could be,and would be thankful for any ideas.The heat seems to be working fine just don't want this to become a bigger problem.
#173 of 539 Re: 1998 Explorer has no heat/weird a/c situation [Mishasma]
Dec 06, 2008 (5:49 pm)
Your problem sounds like the common blend door problem on the early Explorer. The door is on a vertical axis and when it breaks, it can swing back and forth randomly giving heat or AC or nothing. The difference on acceleration is the force placed on the door swinging it one direction.
You can check the operation by fully opening the glove box, removing the actuator motor on top of the plenum box and examining the blend door axle. Pictures of the common fail signature are available on the heatertreater.net web site. There are several "free" fixes that mostly are worth what you pay for them. The solution on the web site is solid and proven over hundreds of vehicles and will resolve the problem once and for all.
#174 of 539 2002 Ford Explorer Heating Problems please help!!
Dec 18, 2008 (11:29 am)
My 2002 Ford Explorers heat will not work....It blows out air just fine, but its cold...when I turn the controller on heat, it makes a knocking sound and just keeps blowing out cold air. I was reading a few other problems and I may get it, but if someone could tell me how to fix it....that would be great!!!
#175 of 539 Re: 2002 Ford Explorer Heating Problems please help!! [hash_penni]
Dec 18, 2008 (11:53 am)
Hi Hash penni... I have a 98 Explorer and have recently discovered that my A/C is stuck on... I took it in to get the Thermostat changed (which was bad by the way), only to have the repair man, who is a former Ford employee, explain to me that the blend door actuator has gone bad... In mine, he opened the glove box and dropped it, and behind it on the fire wall was a white box with a wire plugged in it.. he unplugged it and turned the air on and off and there was no change in the system.. He then informed me that the BLEND DOOR MOTOR... or what is further referred to at Autozone, Advance, and Pepboys as a blend door actuator is what I need to fix it...
After further review, it has to be ordered (3-5 day wait) and the entire dash has to be removed to change it...
Again, I do not know if this is your problem but its a place to start...