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1993 Town Car AC Question & Follow Up

Hey Bill

I was wondering why my 1993 Town Car blows cool AC while I'm driving, but many times if I make a turn I hear some kind of swoosh sound and the AC will then blow hot air. I usually have to perform the AC diagnostic test and the AC will usually blow cool after the test is complete. Any idea?? Thanks

JT

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Hello JT -

Do you not get any display codes from your diagnostic tests? Not being able to hear the actual sound that you describe or where it is coming from, your description sounds much like a faulty Temperature Blend Door Actuator or the Blend Door itself inside the heater/ac plenum. These two items are well known to fail on these systems. The fact that the issue surfaces when you make a turn though leads me to side with a blend door malfunction of some kind. The actual repair can be time consuming and definitely is not for persons that are unskilled in under dash and heater/ac work. Even good automotive ac/heat techs need experience with a few of these to become comfortable with them. If you are planning on doing this repair yourself I would strongly advise you to first get a solid second opinion from a good local a/c technician who is familiar with these systems. While I am quite confident at this point in my opinion, an actual on scene opinion may be more accurate and valuable for you due to the difficult location of the failed parts. If we can be of further help with any shop manuals or repair parts please call our office.

Sincerely,

Bill

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Bill -

I remember the diag test displaying a 02 and I believe that's the only number it shows. It does sound like extensive work but I really appreciate your email. It is very good advice thank you.

JT

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JT -

Thanks for the quick return information. That code 02 is the fault code display for the Blend Door Actuator module. We are pleased that you enjoy the blog.

Sincerely,

Bill
Bill