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Old 08-11-2010, 12:47 AM   #1
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Blend Door Actuator

I've searched the web for a couple of weeks to figure out what my A/C problem is. It blows cold on the passenger side, and warm on the driver side. from my understanding, that issue points to a bad Blend Door Actuator. Well, I change it earlier this evening and it did not seem to make a difference in temperature.

Was I supposed to reset my electrical system by removing the negative battery cable or did I miss something when I changed the actuator?

By the way, my car is an '03 SPI LX with about 110K. Thanks in advance.



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Old 08-11-2010, 01:03 AM   #2
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A/C not being fully charged could also be the problem. I don't fully understand why, but I know that is a problem sometimes.

also another possibility could be the heater control valve. that could be faulty and still sending coolant to the driver's side.

(sorry I know I don't have the best/most accurate wording right now. I'm a little tired)
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Old 08-11-2010, 05:16 AM   #3
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It's most likely that the door itself is stuck. Can you work the door manually? If that doesn't work, then I'd be looking at the wiring and the switch.

Mike, you know these don't have a heater control valve. Few Fords do, my Aerostars are the only ones I know of. The Ranger did not. Those things are more trouble than the blend door actuators- at least the old metal ones are. Keeping coolant flowing year round prevents rust and crud from building up in the heater core, and if there's no valve to rust up you won't end up with a broken cable to replace. I had an old Subaru that I'd turn on the heat once per year because the cable broke in the dash, and more than one GM that I had to bundle up in until I got a heater valve replaced.
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Old 08-11-2010, 02:27 PM   #4
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thanks for the reply. I really couldn't see the door so I'm not sure. If the door was not stuck and the actuator was the problem, would the door have to be manually reset, or would it reset itself once the new actuator was plugged in?

If the door is stuck, what would be the quickest/easiest way to fix it? I searched for a how to for fixing the door but didn't find anything.
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Old 08-26-2010, 03:58 PM   #5
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I finally got around to double checking the actuator I installed. It seems that the door moves with the actuator when I help it along a little. I closed the vent, but I can still smell the outdoor fumes as if it is still open. I check the refrigerant level and it was low so I refilled it and it is cold again but you can still smell fumes and stuff from outside.

Anyone have and an idea on how to fix this? Thanks.
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Old 08-27-2010, 06:49 PM   #6
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Getting a bit confused on the issue here, maybe you could enlighten us - blend door controls temps by mixing hot/cold air, or shutting either off at max. travel, the recirculate or outside/inside air door is a different one...
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