No heat or air

2005 MERCURY MARQUIS
120,000 MILES • V8
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MYRTLE REED
  • MEMBER
  • 1 POST
Blower works no heat or air.
Sep 30, 2018 at 8:34 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 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 12:13 PM
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