1997 Mercury Sable No Heat

MERCURY SABLE
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MELISSA'S
  • MEMBER
  • 1 POST
Hi, I recently purchased a 1997 Mercury Sable GS 138,XXX miles. Strangely the heater does not work, but i have AC. There is a clicking noise comming from under the stereo when i turn the temperature to cold, when temperature is turned away from cold the clicking becomes a thuk, thuk. So I hear click,click and thuk,thuk???????
Mar 30, 2006 at 12:17 PM
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VANDRAGON
  • ✓Experienced Mechanic
  • 298 POSTS
this is a ford question but welcome anyway. it sounds like a vacume booster to the heat exchange door. the door may just be stuck. none the less, it is a ford, been there done that, not again!
Mar 31, 2006 at 12:20 AM
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Suggested Repair

Check the vacuum booster that operates the heat-exchange door; the door may be stuck and not allowing heat.

Conversation Summary

The owner of a 1997 Mercury Sable GS reports no heat while the air conditioning still works, along with clicking or thumping under the stereo when the temperature control is moved. The expert suggests a vacuum booster for the heat-exchange door and says the door may be stuck.

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