• Tiny
  • carias30
  • 1997 Mercury Marquis
  • V8
  • automatic
  • 200,000 miles

1997 Mercury grand marquis just now started blowing hot air. Worked just fine yesterday. Do I just need refrigerant?

Wednesday, July 6th, 2011 AT 12:31 AM

1 Answer

  • Tiny
  • mhpautos
  • Expert
  • 30,495 posts

You should first get the system pressures tested, if it is low on refrigerant you will have a leak that needs finding and fixing first, best way to do this is get some leak detector dye added to the system with a small charge of refrigerant, the dye will stain when it is leaking.

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Wednesday, July 6th, 2011 AT 7:09 AM

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