1997 Ford Explorer Malfunction - Heating & Cooling System


Question: I turned the cold/warm potentiometer to hot the other day. When I was warm enough I turned it back to cold however hot (I mean HOT) air kept blowing. It continues today. I check the pot with an ohm meter and it seems to be working correctly. Is there a relay this feeds somewhere that may need to be replaced?

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Technican: Hello, You could have an actuator motor for the temperature door stuck or gears stripped so that it will not move as commanded. Let me check the data base for more.
Technican: The data base I can access from home does not give me the depth I'm looking for. If you squeeze the sides of the glove box together it can be opened past the stops and allowed to hang down for access to the plenum. The temp door actuator motor should be accessable through the glove box opening. Is it connected? Can you see movement of any kind when you change the temp control setting? Let me know if you locate the actuator and if it responds to a tap with a tool to free up a stuck gear or has broken.
Owner: Okay great, I will check it out. If I can get the door closed I will leave it that way since I need heat rarely but A/C 9-10 months out of the year... I live in Florida! I'll let you what I find! Thank you, Chris
Technican: I'm going to get better info for you tomorrow when I can get to a Mitchell 1 Auto Repair Data Base. It will prove more helpful. You may wish to fix this problem instead of just try to make do.
Technican: Mitchell 1 Data Base calls the actuator a Blend Door Motor. It is located on top of the HVAC Plenum Case just as I described. It can be accessed through the glove box. The motor has four wires in the connector. You'll find a GRN/YEL, a YEL/LT GRN, a DK GRN/ORG, and a GRY/RED wire in the connector. Looks fairly simple to replace but it just might wake up if you thump it!
Owner: Hi, thanks. I found another couple bits of info that there apparently was a problem with the temperature blend doors breaking. To fix that it requires removing the dash to get to remove the plenum. I did see the motor on top but there's not a whole lot of play room. I may just end up having to take out the dash to see what I can find. One guy said online that he was quoted $800+ to fix the problem (exactly the same as mine and same year Explorer) because of the labor involved removing the dash. On a positive note, if I turn on the MAX A/C I get cool air, so I'm hoping it will suffice until I can tear this thing apart! Thanks again! CE
Technican: What then shall we do with this question? Are you ready to close it out? Do you have a good rapor with your local Ford dealer? I wonder if Ford's Zone Manager for service would be willing to offer you good will assistance with the bill? I know that Ford wants to keep your repeat business and if you can let them know you are a good customer who is just asking for some help (not a hand out) they will often step up. Some Service Managers have on site authority to offer good will money and others require authorization from the Zone Manager. The defective part needs to be diagnosed and confirmed. If it is the door that has broken I'd ask for good will assistance that will cost you a reasonable co-pay dollar amount. Even if the co-pay were as high as $200 it would be a boost to your continued customer loyalty. It sure won't hurt to ask and I hope you will consider it. If the motor is all that has failed Ford will say that is a maintenance item or normal part life wear out and you'll not be compensated with good will assistance. The key is to ask. Start with the Service Manager. If he says "No" then have him set you an appointment with the Zone Rep. If he won't set the appointment, call Ford yourself and ask for an appointment to state your case. Your thoughts?,

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