Climate control system making clicking noises

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Feb 28, 2010 | 11:28 AM

compressorguy

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Mountain Pass

Joined: Nov 2007

Posts: 226

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From: Chehalis, WA

Climate control system making clicking noises

My 2008 Mariner (Mercury's version of the Escape) has had a problem that seems to be getting worse. It has A/C with the individual side controls and has considerable "ticking" in the central dash area. It started out as an occasional thing before it came up to temperature and I took it to the dealer. They couldn't identify the problem. Now it is nearly continual and quite annoying. I am taking it back to the dealer, but if anyone has any ideas I would welcome a heads up before I take it in.

Thanks

Mar 8, 2010 | 08:15 AM

EBTDM

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Joined: Feb 2003

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Does the symptom change at all from internal recycled air flow as opposed to fresh air?
Just a question.

Mar 8, 2010 | 09:00 AM

triskadek

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Joined: Apr 2006

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From: Santa Barbara and Ottawa

Does the frequency of the ticking change with fan speed? could be something (leaf?) caught in there.

Mar 8, 2010 | 12:27 PM

compressorguy

Thread Starter

Mountain Pass

Joined: Nov 2007

Posts: 226

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From: Chehalis, WA

Quote:

Originally Posted by EBTDM

Does the symptom change at all from internal recycled air flow as opposed to fresh air?
Just a question.

I'm not sure, but I don't think so. It does change with the difference between temperature setting and the temperature in the cabin: ie if I raise the temperature setting above or below the actual temperature by a significant amount the "ticking" stops. I think it is definitely related to a valve or damper in the system.