2002 AC problem/extra part - Page 2 - Taurus Car Club of America : Ford Taurus Forum
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post #11 of 13 (permalink) Old 05-06-2019, 07:33 PM
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Always a good idea to run a self-test/reset on the climate control system once you have all the new parts in. Lost my blend door a few years back and it still didn't work right until I ran the procedure. Here is one post that included most if not all of the TSB text. https://www.taurusclub.com/forum/82-...g-hot-air.html
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post #12 of 13 (permalink) Old 05-06-2019, 08:18 PM
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Originally Posted by 2k3SEL View Post
Always a good idea to run a self-test/reset on the climate control system once you have all the new parts in. Lost my blend door a few years back and it still didn't work right until I ran the procedure. Here is one post that included most if not all of the TSB text. https://www.taurusclub.com/forum/82-...g-hot-air.html
To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the AUTO button within two seconds . The display will show a dashed line in the center of the climate control display window of the Integrated Control Panel (ICP) .

1. The test may run as long as 30 seconds . Record all DTCs displayed. The self-test is completed when 888 appears in the center of the climate control display window of the ICP.

2. If any DTCs appear during the self-test, post the # and I have the chart of what is wrong somewhere.

3. To exit the self-test and retain all intermittent DTCs, press the "-" (COOLER) side of the TEMP button. The RCC module will exit the self-test and retain all intermittent DTCs.

To exit the self-test and clear all DTCs, press the FRONT DEFROST button. All RCC module DTCs will be cleared. Always exit the self-test before powering the system down (system turned off). Intermittent DTCs will be deleted after 80 ignition switch ON cycles after the intermittent condition occurs. If you exit the self test this way, it will recalibrate the blend door.


Simple step by step. Key is the last sentence.


The recalibration runs the blend door motor full hot, and full cold and establishes the limits in memory so it does not max out to the physical limits and bind the gears. If the battery runs down, it can cause the EATC to loose its memory and quit. Happened to me. No need to recalibrate unless the battery has been run down or the blend door motor replaced. Then it is important.


-chart-
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post #13 of 13 (permalink) Old 05-07-2019, 09:01 AM Thread Starter
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I took a look at it again yesterday. When I ran it on full cold (Max A/C, temp set to 60 degrees), the air was registering around 63 degrees (it was 85 outside). I had the glove box and stereo back out, so I manually closed the bottom (3rd) damper and that seemed to give me about another 4-5 degrees.



Thanks for posted the self test info - especially the proper way to exit. I had tried the test before but not sure I exited correctly. I received the blend door but had to send it back for a replacement. I think I'm just going to leave the dampers manually closed for the summer and then tackle the blend door replacement in the fall. I was worried about getting the door to line up with the hole behind it because I didn't know about the recalibration step. Also, since I'm coming from front/below I don't think I'm going to be able to fit that bracket on. I can't even see the post it's supposed to fit over, much less how it connects. Looks like it will take a dash removal which is beyond my skills. Thanks to all who replied - I have cold (ish) air and have learned a lot.


I'm still more convinced that the recirculated air system doesn't work (although it says Max Air if i push Max Air). What temperature should I expect in a perfect system? I'm worried that my 27 degree difference will translate to 80 degrees when August hits. I don't know if this helps - I had the car in park with the Max AC on yesterday with all windows closed. A guy about 10 feet away fired up a cigarette and I could smell it in the cabin almost immediately - it seems like if the cabin air re-circulation was working I wouldn't have smelled it(?)
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