Asked by Guru15X1T Aug 23, 2019 at 05:46 PM about the 1998 Mercury Grand Marquis

Question type: Maintenance & Repair

A\C only blows hot air

2 Answers


If it is blowing heated air and not just outside air then one or more of the Blend Doors are not working, possibly a bad servo motor, worse case is a door is broken and that will get expensive.

1 people found this helpful.

Most likely the above. Also, is the compressor turning(clutch on front spins). Out of refridge? Pressure cut-off switch defective? bad relay? Is one AC hose cool, and one hotter?

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