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Mercury
Marquis
Climate Control
Heater
Not Working
No heat or air
2005 MERCURY MARQUIS
120,000 MILES • V8
MYRTLE REED
MEMBER
1 POST
Blower works no heat or air.
Sep 30, 2018 at 1:34 AM
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STRAILER
✓
Experienced Mechanic
55,616 POSTS
Hello,
It sounds like you have a vacuum line that has broken under the hood that runs the HVAC system. Here is a guide to help you find and fix the problem:
https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position
and
https://www.2carpros.com/articles/car-heater-not-working
Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
Cheers, Ken
Sep 30, 2018 at 5:13 AM
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