Air conditioner problem - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Crown Victoria | Mercury Marauder | Grand Marquis | P71 Forum for discussion of the Ford Crown Victoria, Mercury Marauder, Mercury Grand Marquis and P71.

 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 07-07-07, 10:16 AM Thread Starter
Registered User
 
Join Date: Apr 2005
Posts: 18
Air conditioner problem

I have a 2003 Grand Marquis LS Ultimate Edition. When I have the air conditioner on, the cold air comes up through the defrost vents at the windshield. After a minute or so the air conditioning finally comes through the dash vents as it is supposed to. This happens when I have Max A/C, Normal A/C or Automatic Climate Control on. I took it to a reputable shop and they diagnosed it as the vacuum door in the heater box. Supposedly it was not operating properly. I had it replaced and I still have the same problem. Does anyone have any suggestions? Any help would be appreciated.

tecumseh_bill is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 07-07-07, 05:24 PM
Hi-Tech Redneck
 
Johnny Mullet's Avatar
 
Join Date: Jun 2006
Location: Ashtabula, Ohio
Age: 45
Posts: 1,486
Re: Air conditioner problem

I would check the vacuum line that runs through the firewall first.
Johnny Mullet is offline  
post #3 of 4 (permalink) Old 07-07-07, 08:03 PM Thread Starter
Registered User
 
Join Date: Apr 2005
Posts: 18
Re: Air conditioner problem

Thanks for the response, Johnny. This has all been checked. All hoses, connections, etc. have been checked and double checked. All is good there.
tecumseh_bill is offline  
post #4 of 4 (permalink) Old 08-14-07, 08:14 AM Thread Starter
Registered User
 
Join Date: Apr 2005
Posts: 18
Re: Air conditioner problem

Turns out that it was the "Head Control" this is the unit that controls the climate in the car and is visible on the dash. when it messes up the air blows out the defrost. New ones in Canada are $1000.00. I had a used on installed. There is a waiting list for these things. The only way to get them is to wait until someone totals a Grand Marquis or Crown Vic. This sounds like a design flaw.

Hope this helps somebody.
tecumseh_bill is offline  
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Cars and PAG Vehicles > Ford Crown Victoria | Mercury Marauder | Grand Marquis | P71


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome