I have 1998 Mercury Mystique LS the heat and A/C blow only out defrost why and how do I fix it. Thanks!

Tiny
RONSKI
  • MEMBER
  • 1998 MERCURY MYSTIQUE
  • 90,000 MILES
It makes no differance to what setting I put it on, panel, vents, floor it just blows out defrost vent. If you will please explain why it does this, and what I have to do to fix problem. V6 1998 Mercury Mystique LS 2.5
Do you
have the same problem?
Yes
No
Wednesday, November 30th, 2011 AT 6:03 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
The vent doors are actuated by engine vacuum. Check for vac leaks under the dash and the supply hose from the engine. If you are lucky, you may hear a hissing sound with the engine running.
Was this
answer
helpful?
Yes
No
-1
Wednesday, November 30th, 2011 AT 6:05 AM

Please login or register to post a reply.

Recommended Guides