2003 Mercury Marquis Air conditioner

Tiny
BRUZE2002
  • MEMBER
  • 2003 MERCURY MARQUIS
  • V8
  • 2WD
  • AUTOMATIC
  • 97,000 MILES
No air blows out the front vents, only the top and bottom vents. Also when its used, the floor board under the passenger seat gets wet. I'm sure the two must be related.
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Tuesday, March 2nd, 2010 AT 3:40 PM

3 Replies

Tiny
MERLIN2021
  • EXPERT
Run the self diagnostic test on it by turning the key to on, then press off and floor at the same time, then within 2 secs, press auto, If there is a problem a trouble code will appear on the display. To exit self test, press the BLUE, cooler button this also retains error codes, To erase codes and exit, press defrost, choose one of these before you power down the system. Test with engine at 120 degrees or more, and cabin between 40-90 degrees. Post any codes recorded here and I let you know what's defective.
As for the water, the a/c drain may be clogged. Use a piece of wire and clear the drain tube, it's on the passenger side at the bottom of the firewall.
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Tuesday, March 2nd, 2010 AT 4:04 PM
Tiny
BRUZE2002
  • MEMBER
Thanks! After it ran the display read 888 just didn't look like an error code. And I cant find the drain.
May be I'd need to lift it. Thanks so much!
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Wednesday, March 3rd, 2010 AT 3:24 PM
Tiny
MERLIN2021
  • EXPERT
888 means all the actuators and eatc unit are OK. You can also reach the drain inside on the passenger side, peel the rug back, and you will see a small black elbow that runs from thew case into the firewall, poke a hole downrd thru it, clear it with the wire, and some compressed air, a can of computer duster will work, Then plug the hole you poked with some RTV.
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Friday, March 5th, 2010 AT 3:20 PM

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